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175 Cards in this Set

  • Front
  • Back
  • 3rd side (hint)
bring about (phrasal verb)
to cause to happen; produce an effect
Ex.: The creation of a national railroad system brought about big changes in the economy of the Midwest and west.

Related: cause, lead to, result in
acute (adj)
having the characteristics of being very serious or intense; reaching the point of crisis
Ex.: Natural disasters often produce acute needs for medicine, food and water.
Related: critical, crucial, desperate
apparent (adj)
easily seen or perceived; easily understood
Ex.: The apparent failure of dinosaurs to adjust to changes in the weather caused their extinction.
Related: clear-cut, evident, obvious
attribute (noun)
an identifying characteristic or feature of something
Ex.: One of Thomas Edison's most famous attributes was his persistence.
Related: aspect, trait, quality
dwelling (noun)
a building where one resides
Ex.: The Hopi Indians carved their dwellings into large stone cliffs.
Related: abode, home, lodging
encompass (verb)
to contain or include certain parts
Ex.: The field of linguistics encompasses the areas of social, applied and theoretical language study.

Related: consist of, contain, embody
every so often (adverb exp)
referring to events that occur occasionally or at no specific time
Ex.: Every so often the Colima volcano in Mexico sends huge clouds of smoke into the air.

Related: every now and then, once in a while, now and again
contrast (verb)
to point out differences between two or more things or people by comparing the characteristics of each
Ex.: In the 1960s, suburban growth, contrasted with that of urban areas, showed a movement away from cities.

Related: balanced against, compared to, distinguished from
get rid of (verb)
discard, to cast aside, reject
Ex.: Medieval authorities generally got rid of the belief that the world was round.

Related: dispose of, throw away, discard
indicative of (adj)
serving as proof or a symbol of something
Ex.: The students's lab results were indicative of the high quality of their research methods and their creative problem-solving strategies.

Related: evidence of, representative of, verification of
melt (verb)
to change from a solid state to a liquid state
Ex.: Water melts at temperatures above 32 degrees Fahrenheit.

Related: liquefy, thaw
heyday (noun)
the high point of power, success or popularity
Ex.: The West experienced its nineteenth century economic heyday during the famous California gold rush of the 1840s.

Related: apex, pinnacle, zenith
portray (verb)
to describe someone or something in a specific way
Ex.: Some historians portray the development of the Internet as one of the most important scientific advancements of the twentieth century.

Related: depict, render, represent
put on the back burner (exp)
to postpone to a future time
Ex.: Due to lack of funding, the transportation project was put on the back burner.

Related: defer, delay, suspend
recover (verb)
to rebuild or return to a previous condition or state
Ex.: The economy recovered its strength after a long period of poor economic growth.

Related: recoup, recuperate, regain
slender (adj)
the quality of being thin
Ex.: Snakes have long, slender bodies.

Related: slim, skinny
staple (adj)
a principal ingredient or major element of something
Ex.: Corn, beans and squash were staple foods of the Hopi Indian diet.

Related: chief, essential, prime
take on (phrasal verb)
to take the first steps in doing something
Ex.: Because of the doctor's busy schedule, she is not sure if she should take on another research project.

Related: initiate, commence, undertake
user-friendly (adj)
referring to something that is easy to use, learn or operate
Ex.: User-friendly computer programs are the most popular in today's software marketplace.

Related: simple, uncomplicated
broaden (verb)
to increase a person's knowledge, experience or interests
Ex.: The transcontinental railway system, completed in 1869, broadened the possibility for economic growth in all parts of the country.

Related: enlarge, expand, widen
check out (phrasal verb)
to determine if something is correct or true; to examine carefully
Ex.: During a trip to Pery, archaeologist Johan Reinhard discovered a frozen female mummy while checking out what he thought was a mountain climber's backpack.

Related: examine, investigage, research
adjacent to (prep)
very close to something; near or next to
Ex.: Many home buyers prefer houses that are adjacentto park lands

Related: adjoining, nearby, neighboring
deny (verb)
to insist that something is not true; to not allow something to happen
Ex.: Opponents of the "greenhouse effect" theory deny that human activity could cause a major change in the Earth's climate.

Related: rebuff, refute, reject
dim (adj)
not bright; lacking light; being weak
Ex.: The dim light of the setting sun gave a peaceful feeling to the evening.

Related: faint, soft, weak
easygoing (adj)
not easily bothered; peaceful
Ex.: The engineer's easygoing personality makes him an ideal team leader.

Related: carefree, relaxed, laid-back
factor in (phrasal verb)
to consider or include information used to make conclusions
Ex.: The price of raw material and the costs of production and transportation are factored in to the store price of an item.

Related: add in, include, incorporate
gather (verb)
to collect or come together
Ex.: On August 28, 1963, more than 100,000 citizens gathered in Washington to demonstrate their support for civil rights.

Related: assemble, congregate, meet
life span (noun)
the amount of time that a living thing is expected to live
Ex.: The average life span of people born in the twenty-first century is more than double that of people who were born in the nineteenth century.

Related: lifetime, natural life
minuscule (adj)
being of very small size
Ex.: Camels require only minuscule amounts of water, with many living up to six months in cooler seasons without taking a drink.

Related: diminutive, minute, tiny
radical (adj)
fundamental; basic change that results in something very different from the original thing or idea
Ex.: In general, human beings dislike radical changes.

Related: complete, thorough, total
render (verb)
to cause something to change or develop in a certain way
Ex.: Pure ice is completely clear, but if air bubbles are present, they render it cloudy.

Related: cause to be, develop into, make
run into (phrasal verb)
to meet, sometimes unexpectedly
Ex.: Scientists have run into many challenges in their efforts to produce an alternative to the gas-powered automobile motor.

Related: come across, encounter, meet
sole (adj)
the only one of its kind
Ex.: At his death in 1959, Walter Williams, who was 117 years old, was the sole survivor of the four million soldiers who fought in the US Civil War.

Related: exclusive, lone, single
worthwhile (adj)
having value or being of benefit
Ex.: While preparing for the TOEFL, it is worthwhile to work on building a large English vocabulary.

Related: meaningful, useful, valuable
stem from (phrasal verb)
to have its origins in; to develop from a specific condition or situation
Ex.: Cancun, Mexico is a famous resort city whose popularity among tourists stems from its ideal climate and beautiful beaches.

Related: arise form, develop from, originate from
surpass (verb)
to exceed expectations; to become greater or better
Ex.: It is a goal of most teachers to develop students whose knowledge and skills will one day surpass their own abilities.

Related: better, exceed, go beyond
take up (phrasal verb)
to start a new activity or project
Ex.: Health experts often suggest taking up activities that reduce stress and improve physical condition.

Related: embark on, engage in, start
stamina (noun)
mental or physical strength spent over a long period of time
Ex.: Among the important goals of long-distance runners are those of developing both mental and physical stamina.

Related: endurance, resistance, staying power
take after (phrasal verb)
to look or behave like someone else
Ex.: The popularity of gorilla exhibits at zoos is due to the fact that their behavior so closely takes after that of human beings.

Related: be similar to, look like, resemble
outspoken (adj)
expressing honest opinions directly despite the negative effects they may have on other people
Ex.: African-American journalist William Monroe Trotter was an outspoken supporter of civil rights in the early twentieth century.

Related: blunt, candid, forthright
procure (verb)
to obtain something; usually something hard to find
Ex.: A strong password, which cannot be procured by others, should be used to protect important computer files.

Related: acquire, attain, obtain
recognition (noun)
praise or appreciation of a person's work or achievements
Ex.: Vicent van Gogh's paintings did not receive the recognition that they deserved until well after his death.

Related: acknowledgment, credit, gratitude
nourish (verb)
to give the food or encouragement necessary to grow
Ex.: Governments tend to nourish a feeling of national identity, but people more often identify with their region than with their country.

Related: encourage, nurture, support
foster (verb)
to encourage the development of an idea or policy
Ex.: Respect for the law fosters peace and security in a society.

Related: advance, promote, further
inasmuch as (conj)
in a limited way, something is true
Ex.: Thomas Edison was persistent, inasmuch as he conducted more than one thousand experiments to create the electric lightbulb until he was successful.

Related: because of the fact that, insofar as, since
due to (exp)
as a result of
Ex.: New York City's success as a center of world commerce and finance is due to its perfect location on the east coast.

Related: a consequence of, because of, an account of
enhance (verb)
to increase in value or strength
Ex.: The young teacher's pleasant personality enhanced her ability to manage her classes.

Related: develop, enrich, improve
conspicuous (adj)
easy to observe because it is different or unusual
Ex.: The conspicuous absence of rainfall caused farmers to worry about their crops.

Related: evident, obvious, noticeable
diminish (verb)
to make less important or smaller
Ex.: New methods of communication will probably diminish the need to use communication devices such as the telephone.

Related: decrease, lessen, reduce
bold (adj)
showing courage or lack of fear
Ex.: The bold leadership style of the president changed the mood of the county's people.

Related: courageous, gallant, valiant
attach importance (exp)
to believe that something is important or deserves attention
Ex.: At first, the residents of Pompei did not attach much importance to the eruption of Mount Vesuvius.

Related: attribute, ascribe, confer
beneath (prep)
under
Ex.: Modern submarines can remain beneath the ocean's surface for months at a time.

Related: below, under, underneath
collaborate (verb)
to work together to achieve a certain goal or objective
Ex.: Since 1990, large numbers of scientists have collaborated in the recording of the human genome.

Related: join forces, pool resources, work together
aim (noun)
the act of setting a mission, goal or objective
Ex.: One aim of public health care organizations is to offer education programs to the public.

Related: endeavor, goal, intention
ascertain (verb)
to discover through an investigation; to find out something
Ex.: Before the Hublle space telescope was sent into space on April 24, 1990, scientists could not ascertain if black holes actually existed.

Related: determine, establish, verify
decay (noun)
to be destroyed by natural processes; to become less important
Ex.: It is a well-known fact that foods high in sugar can cause tooth decay.

Related: atrophy, decomposition, deterioration
devise (verb)
to make a plan designed to achieve a goal or serve a purpose
Ex.: Data from the Mesopotamia civilization show that people had already devised mathematical rules by the year 3100 B.C.

Related: develop, formulate, plan
exert (verb)
to make a strong effort to influence; to cause to happen
Ex.: Newspapers and magazines exert a lot of influence on a person's views of world events.

Related: apply, exercise, put forth
shift (noun)
changes in the way people think or do things
Ex.: Recently, there has been a shift away from hard-wired telephone systems to wireless cellular telephones.

Related: alteration, change, modification
outburst (noun)
a sudden and powerful action or expression of emotion
Ex.: Security removed the man whose outbursts of disapproval disturbed the meeting.

Related: eruption, explosion, outbreak
pinpoint (verb)
to find the precise location of something
Ex.: The newest Doppler radar systems can pinpoint the location of bad weather.

Related: identify, isolate, locate
provided that (exp)
if one event is to happen, then another must also happen
Ex.: Teachers may work in any state provided that they meet the license requirements set by that state.

Related: only if, on condition that, providing
nevertheless (adv)
despite what has been mentioned or what has occurred
Ex.: Nursing schools have waiting lists. Nevertheless, a shortage of health care workers is predicted through the year 2020.

Related: all the same, nonetheless, on the other hand
fond of (verb)
to like very much
Ex.: Americans are especially fond of three sports: baseball, football and basketball.

Related: attached to, like, partial to
harvest (verb)
to collect or gather, especially a crop or seafood
Ex.: The blue crap is harvested from the Chesapeake Bay from early spring to late fall.

Related: collect, gather, reap
in the event (exp)
what someone should do in case a specific unexpected event occurs
Ex.: In the event of rain, the game will be postponed.

Related: in case
uphold (verb)
to defend or support law, principle or policy
Ex.: The Supreme Court either upholds or rejects lower court decisions.

Related: defend, support, sustain
whereas (adv)
although something is not true of one thing, it is true of another
Ex.: Most liquids contract when frozen, whereas water expands.

Related: but, on the other hand, while
stable (adj)
not likely to change; steady
Ex.: The stable economic growth of the 1990s created thousands of new jobs across the country.

Related: constant, firm, steady
succinct (adj)
clearly explained with a small number of words
Ex.: The professor gave a succinct explanation of the Aztec civilization's influence on Mexican Spanish vocabulary

Related: brief, concise, to the point
symbolic (adj)
representing something else by an association
Ex.: A county's national flag is symbolic of its culture and people.

Related: illustrative, representative
thanks to (exp)
because of
Ex.: Thanks to increased spending in drug research, many new medicines and treatments have been developed.

Related: as a result of, due to, on account of
unravel (verb)
to separate the parts from a whole to make something clear
Ex.: Scientists have just begun to unravel the mysteries of the human body.

Related: resolve, solve, sort out
vanish (verb)
to disappear
Ex.: Experts cannot agree on why some ships vanish while passing through the Bermuda Triangle.

Related: fade away, perish
source (noun)
the place from which something comes
Ex.: Close, positive family relationships are an important source of happiness in life.

Related: origin, fount, root
struggle (noun)
an arduous fight or effort
Ex.: The Boston Tea Party was a key event in the USA' struggle for independence from England.

Related: battle, effort, labor
proficient (adj)
thoroughly skilled in doing an activity
Ex.: Language experts believe that learning a third language is easier after becoming proficient in a second language.

Related: capable, competent, skillful
scattered (adj)
spread out over a large area; not found in all places
Ex.: Areas of scattered showers usually arrive long before a hurricane reaches land.

Related: dotted, spread out
haphazard (adj)
done with little or no thought or attention
Ex.: Some cities grow haphazardly because of improper planning.

Related: arbitrarily, carelessly, randomly
long for (exp)
to want something very much
Ex.: During the economic depression of the 1930s, many people longed for a return to the successful years of the 1920s.

Related: crave, desire, yearn for
moist (adj)
a little wet
Ex.: The fern is a plant that typically grows best under shady, moist conditions.

Related: damp, humid, wet
emerge (verb)
to come from somewhere or someone
Ex.: The sport of soccer emerged from England during the 1830s.

Related: appear, become known, materialize
exceed (verb)
to be greater than an expected number or amount
Ex.: The number of professors at the meeting exceeded everyone's expectations.

Related: go above, go beyond, surpass
firsthand (adj)
directly from the original source
Ex.: Although knowledge of facts and procedures is very important, there is no substitute for firsthand experience.

Related: direct, personal
advocate (verb)
to support or defend a certain way of doing something
Ex.: Automobile safety groups have advocated seat belt use so successfully that now almost every state has a seat belt law.

Related: promote, support, to back
barely (adv)
almost not existing or happening
Ex.: Most people who went looking for gold in California during the 1840s found barely enough to meet their living expenses.

Related: hardly, just, scarcely
conceal (verb)
to prevent from being known or seen
Ex.: The insects known as Walking Sticks use their similarity to tree branches to conceal themselves from predators.

Related: cover-up, hide, mask
be prone to (exp)
having a natural tendency or likelihood to do something
Ex.: Many people are prone to misunderstand the difficulty of learning a second language.

Related: have a tendency to, be inclined to, likely to
cohesive (adj)
closely joined; being together in harmony
Ex.: Team sports require cohesive groups of people who are willing to work together to reach a common goal.

Related: consistent, unified, united
confidence (noun)
the act of having faith in a person's ability to do something
Ex.: Athletes must have confidence in their ability to reach their training goals.

Related: belief, faith, trust
against one's will (exp)
to be forced to do something that you do not want to do
Ex.: The early colonists paid taxes to England against their will.

Related: forced, involuntarily, unwillingly
ascent (noun)
the act of going up or rising
Ex.: Davy Crockett's popularity made a fast ascent due to his successes as a war hero and politician for the common citizen.

Related: ascension, climb, rise
encounter (verb)
to meet something or someone unexpectedly
Ex.: When Christopher Columbus encountered native Americans, he believed that he was in India and that the natives were Indian.

Related: come across, find, meet
exclude (verb)
to keep out or leave out; to omit
Ex.: All bacteria must be excluded from the operating rooms of hospitals to reduce the possibility of infection.

Related: eliminate, keep out, shut out
flourish (verb)
to grow in a healthy way; to be active and vigorous
Ex.: Hong Kong is an international center of business and finance where free trade flourishes.

Related: burgeon, prosper, thrive
device (noun)
a machine or tool
Ex.: Guglielmo Marconi invented a device known as a spark transmitter, which led to the invention of modern radio communication

Related: apparatus, implement, instrument
mixed bag (exp)
a variety
Ex.: Encyclopedias provide a mixed bag of information on a variety of subjects.

Related: assortment, combination, variety
on the spot (exp)
being at the right place at the exact moment of need
Ex.: When an emergency situation arises on US highways, help usually arrives on the spot within a short time.

Related: at once, immediately, instantly
overlook (verb)
to notice or see, but to pretend not to see
Ex.: Many managers overlook the mistakes of younger, less experienced employees.

Related: ignore, excuse, forgive
harsh (adj)
causing excessive pain or suffering; being extremely difficult to deal with
Ex.: Researches have studied the effects of harsh climatic conditions and high altitudes on the human body.

Related: difficult, severe
interference (noun)
an act of involvement, usually unwanted
Ex.: Solar activity sometimes causes interference in radio communications.

Related: obstruction, obstacle
soaring (adj)
rising very quickly
Ex.: During periods of rising costs, salaries seldom keep up with soaring prices for life's necessities.

Related: elevated, high, lofty
prominent (adj)
very visible or noticeable; standing out from others
Ex.: The North Star, Polaris, is one of the most prominent stars in the northern sky.

Related: eye-catching, famous, well-known
realm (noun)
a world or area of activity
Ex.: Ants can carry up to fifty times their weight, making them the superstar weightlifters of their realm.

Related: dominion, empire, world
subscribe to (exp)
to agree with a principle or idea
Ex.: The writers of the Declaration of Independence subscribed to the idea that all people are created equal.

Related: accept, agree with, join
swift (adj)
fast
Ex.: Jet airplanes provide a means of swift, efficient travel over long distances.

Related: fast, rapid, quick
threatening (adj)
having the characteristic of possibly causing destruction or damage
Ex.: Threatening clouds and lightning are factors that require the postponement of field sporting events.

Related: foreboding, frightening, ominous
think little of (exp)
to give almost no credit or respect to an idea or person
Ex.: Most people living in the 1800s thought little of the idea that humans might someday create a flying machine.

Related: fail to appreciate, undervalue, underrate
turmoil (noun)
a situation where there is much trouble, conflict, or worry
Ex.: The end of slavery in 1860s brought about much turmoil in the economy of the southern states.

Related: chaos, confusion, disorder
vast (adj)
extremely large
Ex.: Mount Saint Helens erupted on May 18, 1980, creating a vast cloud of ashes that covered a large part of the USA.

Related: enormous, gigantic, huge
subject to (exp)
to be most probably affected by something else
Ex.: Farming is always subject to the influence of weather conditions during the growing season.

Related: conditional on, dependent on
float (verb)
to discuss an idea among a group of people to get their reactions to the idea
Ex.: Lawmakers floated the idea of the tax increase among their colleagues to get their opinions on the matter.

Related: propose, suggest, promote
hardship (noun)
something that makes a person's life difficult, such as health problem or lack of money
Ex.: The United States' social security system is designed to reduce the financial hardships of citizens during their retirement years.

Related: adversity, difficulty, suffering
minute (adj)
extremely small or unimportant
Ex.: A minute amount of poison from the Fierce Snake of Australia is enough to kill more than fifty adult humans.

Related: insignificant, minuscule, tiny
distinguish (verb)
to notice the difference between two similar things or people
Ex.: It is difficult for some people to distinguish the colors red, blue and green.

Related: discern, identify, recognize
empower (verb)
to give someone the authority or the right to do something
Ex.: Modern computers have empowered people to organize their lives and discover new ways to solve problems.

Related: allow, authorize, sanction
excel (verb)
to do something very well; to do something much better than most people
Ex.: In addition to the Nobel Peace Prize, Nobel Prizes are awarded to professionals who excel in economics, literature, chemistry, physics and medicine.
courageous (adj)
showing no fear; not afraid
Scientist Charles Darwin is known for the courageous theory on the evolution of human beings.

Related: brave, bold, daring
crude (adj)
not refined, advanced or very well developed
Ex.: The first cotton gin, which was a crude machine used to separate cotton from its seeds, was invented by Ely Whitney in 1793.

Related: basic, rough, simple
barter (verb)
to exchange goods or services for other goods or services without using money
Ex.: Before the invention of paper money by the Chinese in the eighth century, people bartered to get what they needed.

Related: bargain, swap, trade
afford (verb)
to be able to give or provide
Ex.: Modern day vaccines afford protection from diseases that just thirty years ago caused many people to suffer

Related: allow, give, offer
arrange (verb)
to put a group of people or things in a special order or position
Ex.: The Dewey Decimal System arranges library books by dividing all knowledge into ten areas, each with its own specific identifying number.

Related: coordinate, organize, set up
strain (noun)
a difficultly that is caused by too much stress or excessive demands
Ex.: Many airports are not prepared to handle the strain of increased passenger traffic.

Related: burden, pressure, stress
surplus (noun)
having more of something than is required or needed
Ex.: The school system's budget surplus was used to increase teacher salaries.

Related: excess, extra, spare
take advantage of (exp)
a situation or condition that benefits you
Ex.: It is necessary for a country to have an educated work force in order to take advantage of modern technology.

Related: exploit, profit from, make the most of
undertake (verb)
to begin a project or a job for which you are responsible
Ex.: The automobile industry has undertaken studies to find out if hydrogen powered cars can be built and sold at a profit.

Related: assume, commence, start
yield (verb)
to produce something
Ex.: A typical beehive can yield up to fifty-five pounds of honey every year.

Related: bear, furnish, generate
prized for (exp)
used to refer to the characteristics of something that make it important and valuable
Ex.: A diamond is prized for its brilliance, clarity and color.

Related: recognized, valued, well-known
rampant (adj)
out of control; affecting a large area
Ex.: Rampant price increases cause economic hardships.

Related: uncontrolled, unchecked, widespread
rescue (verb)
to save from danger
Ex.: The rescue of the crew of the Apollo 13 moon mission was one of the most dramatic in the history of the space program.

Related: liberate, set free
saturate with (verb)
to make something wet; to be completely full of something
Ex.: Dew occurs when warm air, which is fully saturated with water, cools, leaving drops of water on grassy areas.

Related: douse, drench, soak
somewhat (adv)
a little; just slightly
Ex.: The rules of many card games differ somewhat from country to country.

Related: a bit, to some extent
halt (verb)
to stop
Ex.: Jonas Salk developed the first vaccine against poliomyelitis, which halted the spread of the serious disease in 1950s.

Related: discontinue, finish, freeze
inhabitant (noun)
a person who lives in a specific area
Ex.: Among the most important early inhabitants of western Alaska were the Eskimo.

Related: dweller, occupant, resident
linger (verb)
to remain in a place longer than usual
Ex.: Even in the summer, snow frequently lingers on the tops of Hawaii's highest mountains.

Related: hang back, remain, stay behind
misgiving about (noun)
a feeling of uncertainty or fear that something will not happen as planned or expected
Ex.: As Vice President under Ronald Reagan, George Bush did not discuss his misgivings about the President's economic plan.

Related: doubt, hesitation, worry
cosmetic (adj)
something done very quickly, with little attention to quality or detail
Ex.: Many home owners make cosmetic repairs to their homes before selling them.

Related: hasty, rapid, superficial
feasible (adj)
likely to happen; possible and probable
Ex.: The use of rubber wheels was not feasible until 1839, when Charles Goodyear invented a process that made rubber stronger.

Related: realistic, reasonable, viable
boost (noun)
something that causes growth or improvement
Ex.: The landing of a manned spacecraft on the moon in 1969 gave a boost to the United States space program during the 1970s.

Related: enhance, improve, increase
burst (noun)
an unexpected short period of intense or increased activity
Ex.: Dolphins can swim at speeds of up to thirty miles per hour, with occasional bursts of up to forty miles per hour.

Related: eruption, spurt, surge
chore (noun)
an activity that is performed regularly especially around the house
Ex.: Before Florence Nightingale improved the image of nursing, the jobs of nurses were considered simple chores for women with little or no education.

Related: duty, job, task
blend (noun)
a mixture
Ex.: The population of the USA is a blend of people, language and cultures from all over the world.

Related: assortment, combination, mixture
cease (verb)
to stop
Ex.: Many scientists agree that the destruction of tropical rain forests must cease in order to protect the earth's most important producers of oxygen.

Related: conclude, end, finish
come across (exp)
to find, usually unintentionally
Ex.: While exploring the Grand Canyon National Park, tourists come across one astounding view after another.

Related: come upon, encounter, fall upon
acclaim (noun)
something that deserves praise for its high quality or standing
Ex.: Albert Einstein received international acclaim after his theory of relativity was accepted by the Royal Society of London in 1919.

Related: applause, approval, commendation
astounding (adj)
very surprising; unbelievable
Ex.: The amount of water flowing over Niagara Falls is an astounding 600,000 gallons of water per second.

Related: amazing, astonishing, surprising
deliberately (adv)
done on purpose; done with a prior plan
Ex.: By using genetic engineering, genes can be deliberately changed to produce new types of fruits and vegetables.

Related: by design, intentionally, purposely
diligent (adj)
hard-working; paying attention to details
Ex.: Bertrand Russell was a diligent mathematician and philosopher.

Related: conscientious, meticulous, thorough
drawback (noun)
a disadvantage
Ex.: One drawback of electric-powered cars is their short battery life.

Related: downside, problem, shortcoming
engage in (exp)
to participate in an activity
Ex.: To be well prepared for college, a student should not earn good grades but also engage in after-school activities.

Related: take part in, undertake
map (verb)
to produce a plan, usually involving many steps
Ex.: In order for students to be successful in their studies, they should map out strategies that will lead them to academic success.

Related: chart, plot
noticeably (adj)
something that is easily seen or understood
Ex.: After summer thunderstorms, the air temperature is noticeably cooler.

Related: clearly, evidently, visibly
forefront of (noun)
something in the first or highest position
Ex.: Japanese auto makers are in the forefront of developing cars that operate on both gas and electricity.

Related: front, head, vanguard
hence (adv)
as a result; therefore
Ex.: The flowers and leaves of a plant found in Eurasia produce a spray that can be burned; hence the names "gas plant" and "burning bush" were given to the plant/.

Related: consequently, thus
reveal (verb)
to show; to make something known to others
Ex.: As fall approaches and trees stop producing chlorophyll, their leaves reveal their true colors: yellow, orange, purple and gold.

Related: disclose, expose, make public
set off (verb)
to cause a series of actions to start
Ex.: The government's tax cut set off strong consumer spending, hence improving the nation's economy.

Related: begin, cause, trigger
shortage of (noun)
something that is not found in sufficient quantities; a lack
Ex.: In many areas of the world there is a shortage of clean drinking water.

Related: deficiency, dearth, scarcity
outcome of (noun)
the result of an action or activity
Ex.: One of the outcomes of the United States Civil War was the end to slavery.

Related: consequence, effect, end result
recall (verb)
to remember; to bear in mind
Ex.: People who suffer from amnesia cannot recall events of the past.

Related: call to mind, recollect, remind
tangible (adj)
something that is real; can be sensed
Ex.: The tangible results of a daily exercise program are increased energy, more flexibility and improved strength.

Related: actual, concrete, substantial
urge (verb)
to strongly encourage someone to follow a suggestion or advice
Ex.: The professor urged his students not to wait until the last minute to complete their laboratory work.

Related: compel, drive, push
wholesome (adj)
something that is healthy or good for someone
Ex.: A wholesome lifestyle improves a person's quality of life in his or her latter years.

Related: clean, decent, moral
ample (adj)
having more than enough of something; sufficient
Ex.: Because farming families of the early 1900s were large, their houses had to have ample living space for all family members.

Related: abundant, plentiful, substantial
apply in (verb)
something that is important to or appropriate for a situation
Ex.: English rules of grammar cannot be applied in all cases due to the fact that there are many exceptions to the rules.

Related: be relevant, pertain to, relate to
discreetly (adv)
something done in a quiet, private way with great skill
Ex.: When a manager must tell an employee that his job has been eliminated, the situation must be handled discreetly.

Related: cautiously,prudently, tactfully
eager (verb)
to be excited about doing something
Ex.: Harriet Tubman, founder of Underground Railroad, was eager to help slaves escape from their owners and lead them to freedom

Related: enthusiastic, ready, willing
landmark (adj)
an important change, discovery, or event
Ex.: The signing of the United States Declaration of Independence was a landmark historical event.

Related: breakthrough, innovative, milestone
grasp (verb)
to come to an understanding
Ex.: It is very difficult to grasp the enormous size of the galaxy.

Related: comprehend, follow
hinder (verb)
to block or interfere with a process
Ex.: The unplanned growth of cities often hinders the development of public roads and transportation systems.

Related: hamper, interfere, obstruct
put up with (exp)
to tolerate; to accept a bad situation without complaining
Ex.: Immigrants must often put up with difficult adjustments to life in their new land.

Related: bear, endure, suffer
ominous (adj)
being of the feeling that something bad is going to happen
Ex.: One of the ominous signs that a forest is under attack by an insect is the appearance of large groups of dead trees.

Related: foreboding, menacing, threatening
turn into (phrasal verb)
to become; to turn out to be
Ex.: After a butterfly pupa breaks out of its cocoon, it turns into a beautiful butterfly.

Related: convert into, develop into, grow to be
withstand (verb)
to successfully endure a condition; to accept
Ex.: Modern jet engines, which can withstand long periods of operation, make trans-Pacific air travel possible.

Related: survive, tolerate
stature (noun)
a certain high standing among other people or things
Ex.: John Steinbeck earned stature as a great American author for his ability to describe the real lives of ordinary people of the early 1900s.

Related: prominence, rank, status
take to (phrasal verb)
to like something or someone, usually right away
Ex.: Although life was difficult for the early settlers of the West, they quickly took to their homeland and its lifestyle.

Related: become fond of, enjoy, take pleasure in