LCPS Grade 9 Vocabulary Lists
Suffixes
Roots/Bases
Prefixes
List 1
pre-
before, in front of
precede, predict (tell before),
preface
post-
after, behind
postpone, posthumous, post-game
tele-
distant
telephone, telepathy, television,
telegram
aqua- / aque-
water
aquatic, aquarium, aqueduct
duc- / duct-
lead
induce, deduce, seduction, conduct,
abduct, produce, aqueduct
fin- / finit-
end, limit
final, definite, infinite
magn-
large, great
magnify, magnate, magnificent
scrib- / script-
to write, written
manuscript, scribe, proscribe,
scripture, scribble, prescription
sol-
alone
solitary, solo, soliloquy, solitaire
vid- / vis-
to see
video, vision
voc- / voke- / voice
voice, to call
vocal, invoke, revoke, invocation,
evocative, convocation
-ate
to make
donate, vibrate, implicate
-ation
the result of doing
donation, vibration, implication
-ify
to make
justify, magnify, intensify
Suffixes
Roots/Bases
Prefixes
List Two - 9th grade
abstract, abduction, abstain,
abnormal
adhere, adjoin, adjacent (lying near
to)
imperfect, impolite, impossible,
impractical,indiscreet, invisible,
ineligible,
a- / ab- / abs-
away, from
ad-
to or toward
im- / in-
not
ami- / amic-
love
aud-
sound
gram- / graph-
to write or draw,
writing, printing
chron-
time
grad- / gress-
to step
hydr(o)-
water
mut-
change
mutant, mutability, mutate
terr(a)-
earth, ground
subterranean, terrain, terrestrial,
disinter, territorial
-er / -or
one who does
teacher, counselor
-ologist
one who studies
zoologist, biologist
-ology
study of
zoology, biology
amiable, amicable, amorous
auditorium, audible, audiologist,
audiotape
telegram, graphite, graphology,
biography, telegraph, geography
chronicle, chronology, chronometer,
synchronize, chronological order
graduate, progress, gradual,
progression, transgression
dehydrate, hydraulics, hydroelectric,
hydroplane
Suffixes
Roots/Bases
Prefixes
List Three - 9th grade
de-
down, away, off
descend, deject (cast down), decline
di- / dif- / dis-
apart, different
diverge, differ, dissent, disengage,
discord, discomfort
ex-
out of, from, former
exhume, exhale, exodus, exit
alter-
other
alternate, alter ego
ced- / cess-
yield, go
recede, secede, proceed, intercede,
concession
demo-
people
demography, democracy, epidemic
ego-
self
egotist, egomania
min-
small
minority, minuscule, minute
miss- / mit(t)-
to send
transmission, remittance, permit,
submission, mission, emit
pon- / pos- / posit-
put
correspond, compose, composition
port-
carry, door, port
portable, transport, portage, report
temp- / tempor-
time
temporary, temporize, contemporary
-cracy
government by
democracy, autocracy, meritocracy
-crat
ruler
democrat, autocrat
Suffixes
Roots/Bases
Prefixes
List Four - 9th grade
macro-
large
macrocosm, macroeconomics
mega- / megalo-
large
megajackpot, megalomaniac
micro-
small
microscope, microcosm,
microeconomics, microbe
biblio-
book
bibliography, bibliophile, bible
cour- / cours- / cur/ curs-
to run
courier, course, concur, cursory
cogn-
know
recognize, cognitive, incognito
lect- / leg- / lig-
to read, choose
mob- / mobil- /
mot- / mov-
move
mort-
death
mortal, mortician, immortality
spec- / spic-
look, see
spectacles, spectator, inauspicious,
prospect, speculate
trac- / tract-
to pull or drag
traction, tractor, detract
-est
most
fastest, greatest
-less
without
hopeless, selfless
lecture, illegible, legible, lectern,
lecturer, election
mobility, emotion, movement,
mobile, automobile, motion,
promote, movie
Suffixes
Roots/Bases
Prefixes
List Five - 9th grade
autobiography, automobile,
autocracy, automaton, automatic
co-worker, connect, confide,
conspire
auto-
self
co- / con-
with
inter-
among or between
interstate, intervene (come between)
intra-
within
intrastate, intramural
brev-
short
brief, abbreviate, brevity
cruc-
cross
crucifix, crucial, crucify
culp-
guilt
culpable, culprit
glyph-
vertical groove
Hieroglyphics—Egyptian “sky
writing”
holo-
whole, entire
holograph, holocaust, holistic
iso-
equal, identical
isolate, isotope
mon-
warn
premonition, admonition
sed- / sess - / sid-
to sit
sedate, subside, sedentary, session
struct- / stru-
to build
misconstrue, structure, destruction
Suffixes
Roots/Bases
Prefixes
List Six - 9th grade
chromatic, monochrome,
polychrome
collaborate, committee, communal,
community
chrom-
color
col- / com-
with
cryph- / crypt-
concealed, secret
encryption
dox-
belief, opinion
orthodoxy, paradox, heterodoxy
fil-
threadlike
filament
geo-
earth
il-
not (makes the
word negative)
geopolitical, geology, geography,
geothermal
illogical, illegitimate, illicit, illegal,
illegible
liter-
letter
literature, illiterate, literal
loc-
place
local, location
mar-
sea
marine, mariner
multi-
many
multiply, multitask, multimodal
re-
again, back
repeat, recede, regress (step back),
rebuild
rupt-
break
erupt, rupture
Roots/Bases
List Seven - 9th grade
semi- / demi- / hemi-
half
semicircle, demigod, hemisphere
un(i)- / mon(o)-
one
universe, unisex, monotone
bi(n)- / du- / di-
two, twice
binary, duplex, disect
tri- / terti-
three, third
triangle, tertiary
quad(ru)- / quart- /
tetra-
four, fourth
quadrulateral, quarter, tetrameter
quint- / pent-
five, fifth
quintet, pentagon
sex(t)- / hex-
six, sixth
sextet, hexagon, hex wrench
sept(em/im)-
seven, seventh
September (actually 9th month),
septuagenarian
oct(av)-
eight, eighth
octagon, octave
non- /novem-
nine, ninth
nonagon, November (actually 11th
month)
deca- / deci(m)- /
decem-
ten, tenth
decade, decimal, decimate
cent-
hundred
centennial, percent
mil(l)- / kilo-
thousand
millenium, millipede, kilometer
Prefixes
List Eight - 9th grade
sub-
under
super- / sur-
over, in addition,
above
submarine, subject, subhuman
subterranean
supervise, surreal, superhuman,
superego, superintend, surpass
arthro-
joint
arthritis, arthropod
cord-
heart
record, cordates, cordial
Suffixes
Roots/Bases
dent- /dont- / odont- tooth
dentist, orthodontist, dentifrice,
dentin, dentures
dermatology, epidermis,
hypodermic
gametes, monogamy, polygamy,
bigamy
hemophilia, hematology,
hemoglobin
derm-
skin
gam-
marriage
hemo- / hema- /
hem-
blood
neuro-
nerve
neurology, neurosis, neurobiology
ortho-
straight, correct
orthodontist, orthopedic
ped- / pod-
foot
pedal, centipede, gastropod,
pedestrian, arthropod, podiatrist