Common Prefixes

Front 1

A, an

Back 1

Without, lack of

Front 2

Ab-

Back 2

Away from

Front 3

Acr-

Back 3

Pertaing to extremity

Front 4

Ad-

Back 4

To, toward

Front 5

Ante-

Back 5

Before, forward

Front 6

Anti-

Back 6

Against, opposed to

Front 7

Auto-

Back 7

Self

Front 8

Bi-

Back 8

Two

Front 9

Brady-

Back 9

Slow

Front 10

Circum-

Back 10

Around, about

Front 11

Contra-

Back 11

Againsy, opposite

Front 12

Di-

Back 12

Twice, double

Front 13

Dia-

Back 13

Thriugh, completely

Front 14

Dys-

Back 14

With pain or difficulty

Front 15

E-, ex-

Back 15

From, out of

Front 16

Ecto-

Back 16

Out of

Front 17

Em-

Back 17

In

Front 18

Endo

Back 18

Within

Front 19

Epi-

Back 19

Upon, on

Front 20

Eu-

Back 20

Normal, good

Front 21

Exo-

Back 21

Outside

Front 22

Extra-

Back 22

Outside, in addition

Front 23

Hemi-

Back 23

Half