ab-

(a- rarely before consonants; abs- before c and t)

away from

ad-

(ac- before c; af- before f; ag- before g; al- before l; an- before n; ap- before p; as- before s; a- before sp; at- before t)

to, toward

ambi-

both

ante-

before, forward

bi-

(bin-, bis-)

two, twice, double, both

circum-

around

con-

(co- before h; col- before l; com- nefore e, m, and p; cor- before r)

together, with; thoroughly, very

contra-

against, opposite

de-

down, away from, absent

dis-

(di- before g, v, and usually before l; dif- before f)

apart, away

ex-

(e- before consonants; ef- before f)

out of, away from

extra-

(rarely extro-)

on the outside, beyond

in-

(il- before l; im- before b, m,

(1) in, into

(2) not

(3) very, thoroughly

infra-

beneath, below

inter-

between

intra-

(rarely intro-)

within

non-

not

mult-

(often multi-)

many, much, affecting many parts

ob-

(oc- before c; op- before p)

against, toward; very, thoroughly

per-

(pel- before l)

through; very; thoroughly

post-

after, following, behind

pre-

before, in front of

pro-

forward, in front

re-

back, again

retro-

backward, in back, behind

se-

apart, away from

semi-

half

sub-

(suf- before f; sup- before p)

under

super-

(often supra-)

over, above, excess

trans-

across, through

ultra-

beyond, excess