Prefixes and Their Meanings

Front

a-

Back

not, without

Front

ab-

Back

away, from

Front

abs-

Back

away, from

Front

ad-

Back

to,toward

Front

ambi-

Back

both, around

Front

an-

Back

not, without

Front

ante-

Back

before

Front

anti-

Back

against

Front

auto-

Back

self

Front

bi-

Back

two, twice