Prefix 1

a- (ay) an- (an)

not (negation)

anti- (AN-tee) contra- (KON-trah)

against (negation)

de- (dee)

down, away from (negation)

ante- (an-tee) pre- (pree)

before (time/speed)

pro- (proh)

before, on behalf of (time/speed)

brady- (brah-dih)

slow (time/speed)

tachy- (tak-ih)

fast (time/speed)

post- (pohst)

after (time/speed)

re- (ree)

again (time/speed)

ab- (ab)

away (direction/position)

ad- (ad)

toward (direction/position)

circum- (sir-kum) peri- (per-ee)

around (direction/position)

dia- (dai-ah) trans- (tranz)

through (direction/position) 1

e- (eh) ec- (ek) ex- (eks)

out (direction/position)

ecto- (ek-toh) exo- (ek-soh) extra- (eks-trah)

outside (direction/position)

en- (en) endo- (en-doh) intra- (in-trah)

in, inside (direction/position)

epi- (eh-pee)

upon, on (direction/position)

sub- (sub) Infra-

beneath (direction/position)

inter- (in-ter)

between (direction/position)

Para-

near, beside, abnormal, apart from, along side of (direction/position)

Retro-

backward, behind (direction/position)

Supra-

above (direction/position)

bi- (bai)

two (size/quantity)

hemi- (heh-mee) semi- (seh-mee)

half (size/quantity)

hyper- (hai-per)

over (size/quantity)

hypo- (hai-poh)

under (size/quantity)

macro- (mak-roh)

large (size/quantity)

micro- (mai-kroh)

small (size/quantity)

mono- (maw-noh) uni- (yoo-nee)

one (size/quantity)

oligo- (aw-lih-goh)

few (size/quantity)

pan- (pan)

all (size/quantity)

poly- (pawlee) multi- (mul-tee)

many (size/quantity)

con- (kon) syn- (sin) sym- (sim)

with, together (general)

dys- (dis) Mal-

bad (general)

eu- (yoo)

good (general)

Hetero-

different (general)

Homo-

same (general)