Common Prefixes and Suffixes

Front

un-

Back

not, opposite of (e.g., unhappy, unclear)

Front

re-

Back

again, back (e.g., redo, rewrite)

Front

pre-

Back

before (e.g., preview, predict)

Front

dis-

Back

not, opposite of (e.g., disconnect, dislike)

Front

mis-

Back

wrongly, badly (e.g., mislead, misuse)

Front

in-

Back

not, into (e.g., incorrect, insert)

Front

im-

Back

not (before 'p', 'm', 'b') (e.g., impossible, immature)

Front

non-

Back

not (e.g., nonfiction, nonstop)

Front

over-

Back

too much (e.g., overeat, overwork)

Front

sub-

Back

under, below (e.g., submarine, subzero)