-act-
act
action, actor, react, transact, enact
-aud-
hear
audience, auditorium, audible, audition
-bio-
life
biology, biography, biofeedback, bionics
-cred-
believe;trust
credit, discredit, credible, credulous
-dem-
people
democracy, Democrat, demographics
-dic-
speak;say
dictate, predict, contradict, verdict, diction
-geo-
earth
geography, geology
-graph-
write;draw
autograph, paragraph, phonograph, photograph, telegraph
-loc-
place
allocate, locate, location
-man-
hand
manual, manufacture, manuscript, manipulate, manicure
-ped-
foot
pedal, pedestrian, pedestal, pedicure
-pop-
people;nation
population, popular, populace
-port-
carry
import, export, portable, porter, transport
-sign-
mark;sign
insignia, signal, significant, signature
-spec-
-spect-
see; look at
inspect, respect, spectacle, spectator, suspect
-tract-
pull; drag
attract, detract, contract, subtract, traction, tractor
-vid-
-vis-
see; look
evidence, video, provide, providence, visible
-volv-
-volu-
roll; motion or activity
evolve, involve, revolve, revolver, revolution
anti-
against; opposing
antiwar, anticlimax, antifreeze, antibiotic
bi-
two
bisect, bimonthly, binoculars, biceps
co-
with; together
coexist codependent, copilot, cosign
de-
away from; off; down
debrief, debug, deconstruct, decrease
dia-
through; across; between
diameter, diagonal, dialogue, Diagram
in-, im-
in; into; within;not
introduce, imprison, insensitive, impatient
inter-
between; among
interpersonal, intersect, interfere, international
non-
not
nonprofit, nonfat, nonsense, nonstop
post-
after; following
postnasal, postgraduate, postpone, postgame, postwar
pre-
before
prepay, preview, predict, prevent
re-
back; backward; again
reverse, return, recur, reflect, reject
sub-
under; beneath
submarine, substandard, subdue, subtract
syl-, sym, syn, sys
together;with
syllable, symmetric, synthesis, system, synomon, sympathy
trans-
across
transplant, translate, transcribe, transport
-able
able; likely
readable, lovable, predictable, likeable
-ance, -ancy
act; quality
admittance, constancy, attendance, importance
-ate
to become; to cause; to be
captivate, activate, deactivate, motivate
-fy
to make; to cause; to be
liquefy, simplify, clarify, classify
-ible
able; likely
flexible, digestible, compatible, edible
-ity
state; condition
reality, sincerity, ability, insanity
-ize
to make; to cause; to be
socialize, motorize, agonize, apologize
-ment
result; act of; state of being
judgement, fulfillment, punishment, agreement
-ous
characterized by
dangerous, malicious, odorous, famous
-tion
action; condition
rotation, election, motivation, invention