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10 Cards in this Set
- Front
- Back
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Obsolete
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outdated, old fashioned, no longer in use Black and white TVs became obsolete in the late 1960s.
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Obstinate
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stubborn, mulish, dogged Hal's mother tried to get him to eat his spinach, but he remained obstinate.
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Obstruct
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to get in the way of; to bloc; to hamper; block, impede, check, hamper He removed his hat so as not to obstruct another's view of the stage.
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Obtuse
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not acute; someone who is not smart; thick; dull; slow, stupid Tom was too obtuse to realize that the sum of the angles of a triangle is 180 degrees.
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Olfactory
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relating to the sense of smell In human beings, olfactory sensations are perceived with the nose.
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Ominous
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threatening, menacing, having the character of an evil omen; foreboding, threatening The sky filled with ominous dark clouds before the storm.
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Opportune
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appropriate to time or circumstances: timely, appropriate, lucky, appropriate to time Ted's investment in gold, made just before demand began to rise, was opportune.
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Option
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choice, selection, preference, alternative Donna carefully considered every option before making her final decision.
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Orbit
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v. to move around some object, as a planet; to circle, revolve The moon orbits the earth, which in turn orbits the sun.
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Orchid
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purple, lavender The vice-principal turned orchid with rage. (Orchid is usually used to mean a type of flower.)
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