Word roots and prefixes for the ISEE and SSAT

125 Greek and Latin word parts, each with the words actually built from it, the breakdown of every one, and the look-alikes that are not related at all.

Prefixes

a/an — without/lack of
ab — away from, off of
ambi/amphi — both, on both sides, around
ante — before, previous
anti — against, opposite
auto/auth — self
ben/bene — good, helpful
circum — around
con/col/com — together, with
de — opposite, reverse
dis — apart, away
em/en — within/put inside
endo/ind — inside, within
equ — equal, same
eu — good, positive
ex — out, away
exo/ecto — outside, external
geo — earth, ground
hyper — over, beyond, excessive
hypo — under, below, deficient
in — in, into, towards
in/im/ir — not, opposite
inter — between, among
intro — into, inside
mal — bad, evil
met/meta — changed, different, boundary
mis — wrong
mono — one, singular
ob — against, facing
pan — every, all
par/para — beside, similar
poly — many
post — after
pre — before, in front of
re — back, again
sub — under
super/sur — over, beyond
syl/sym/syn — alongside, same, together
tele — beyond, afar
trans — across, beyond, through
un — opposite, against

Roots

anim — life
arch — ruler, chief, first
aud — hearing, listening
bio — life
cap/cept — take, seize
ced/cess — go, yield
chron — time
cis/cise — cut, shorten
cred — belief
curr/curs — run, flow
dem — people
dict — say, speak
duc/duct — lead
dur — length of time
fac/fect — make, do
fid — faith, trust
flect/flex — bend
fort — strength
gen — birth, origin, kind
graph — writing
gress — movement
ject — throw, cast
laud — praise
loc/loq — speech
log/logue — word, speech, study
luc/lum — light
mag/magna — great, large, important
mit/miss — send
morph — shape, form
nov — new
pac — peace
path — feeling
ped — foot, walk
phil — love
phon — sound, voice
plic/plex — fold, weave
pon/pos — place, put
port — carry
rupt — break, burst
scrib/script — write
sens/sent — feel, perceive
sequ/secut — follow
spec — look at, observe
struct — build
tang/tact — touch
terr — earth, land
therm — heat
tract — pull, drag
ultim — final, end
ver — truth
vert/vers — turn
vid/vis — see
vit/viv — life, alive
voc/vok — call, voice

Suffixes

-able/-ible — turns a verb into an adjective meaning capable of, fit to be, or worthy of the action
-al — turns a noun or root into an adjective meaning related to or characterized by it
-cide — forms words naming an act of killing or the person or substance that kills
-en — turns an adjective or noun into a verb meaning to make or become that quality
-ful — turns a noun into an adjective meaning full of or strongly marked by it
-ic — turns a noun into an adjective meaning related to or characterized by it
-ify — turns a noun or adjective into a verb meaning make or cause to become
-ism — turns an idea or practice into a noun naming a doctrine, system, practice, or characteristic behavior
-ist — turns a field, practice, or belief into a noun for a person associated with it
-ity — turns an adjective or root into a noun naming a state or quality
-ive — turns a verb or root into an adjective meaning tending to, able to, or serving to do it
-ize — turns a noun or adjective into a verb meaning make, become, or treat in that way
-less — turns a noun into an adjective meaning without or lacking it
-ment — turns a verb into a noun naming the action, result, or means
-ness — turns an adjective into a noun naming its state, condition, or quality
-ology — turns a subject into the name of its study or body of knowledge
-ous — turns a noun or root into an adjective meaning full of, having, or characterized by it
-phobia/-phile — forms names for intense fears or aversions, or for people and feelings marked by strong fondness
-tion/-sion — turns a verb into a noun naming an action, process, or result
-ward — turns a place or direction into a word showing movement or orientation that way

Number parts

bi, di, du/deu — two, divided
dec — ten
hept, sept — seven
hex, sext — six
nona — nine
oct — eight
pent, quin — five
quad, tetra — four
tri, ter — three
uni, sol, mono — one, singular