Common Affixes

Front

re-

Back

again

Front

pre-

Back

before

Front

anti-

Back

against

Front

dis-

Back

not, opposite of

Front

in, im, il, ir

Back

not

Front

un

Back

not

Front

-ed

Back

past tense verb

Front

-less

Back

without

Front

-er (as in taller)

Back

comparative

Front

-er (as in teacher)

Back

one who/someone who