PSAT Roots and Prefix Flashcards
a-, an-
not, without (Abyss, Achromatic, ANhydrous)
a-
on (Afire, Ashore, Aside)
a-, ab-, abs-
from, away, off (ABduct, ABnormal, ABSent, Aversion, ABbreviate)
ac-, ad-
to, toward, near (ACcelerate, ACcessible, ADmittance)
acro-
top, height, tip, beginning (ACRObat, ACROnym, ACROphobia)
act-
do (ACTivity, reACT, interACTion)
aer-, aero-
air (AERate, AERial, AEROspace)
agr-, agri-, agro-,
farming (AGRIculture, AGRIbusiness, AGRarian)
alg-, algo-
pain (neurALGia, anALGesic, nostALGia)
ambi-, amphi-
both, on both sides, around (AMBIdextrous, AMBIguous, AMBIvalence)
ambul-
walk, move (AMBLe, AMBULant, AMBULance)
ami-, amo-
love (AMIable, AMIty,AMOrous)
ana-
up, back, against, again, throughout (ANAlysis, ANAtomy, ANAchronism)
andr-, andro-
man, male (ANDROgynous, ANDROid, misANDRy)
anim-
life, spirit (ANIMal, ANIMate, equANIMity)
ann-, enn-
year (ANNiversary, ANNual, milENNium)
ante-
before, in front (ANTEcede, ANTEmeridian, ANTEroom)
anth-, antho-
flower (crysANTHemum, ANTHOlogy, ANTHOzoan)
anthrop-, anthropo-
human (ANTHROpology, ANTHROpomorphism, philANTHROpy)
anti-
against, opposite of (ANTIbody, ANTIseptic, ANTIsocial)
apo-, apho-,
away, off, separate (APHOrism, APOlogy, APOstrophe)
aqu-, aqua-
water (AQUArium, AQUAtic, AQUeduct)
arbor-
tree (ARBORist, ARBOR, ARBORous)
arch-, archi-
chief, most important, rule (ARCHbishop, ARCHenemy, matriARCH, monARCH)
arch-, archa- archi-
primitive, ancient (ARCHAeology, ARCHAic, ARCHIve)
arthr-, arthro-
joint (ARTHROscope, ARTHRitis, ARTHROpod )
art-
skill (ARTifact, ARTisan, ARTist)
astro-, aster-
star, stars, outer space (ASTROnaut, ASTROnomer, ASTERick)
aud-, audi-, audio-
hear (AUDIble, AUDIence, AUDIOvisual)
auto-
self, same, one (AUTOcrat, AUTOgraph, AUTOmatic)
avi-, avia-
bird (AVIAry, AVIAtrix, AVIAtion)
bar-, baro-
pressure, weight (BARic, BARyon, BAROmeter)
bell-, belli-
war (BELLIcose, BELLIgerent, reBEL)
bene-
good, well (BENEfactor, BENEficial, BENEvolent)
bi-, bin-
two, twice, once in every two (BIannual, BINoculars, BIlateral)
bibli-, biblio-
book (BIBLIOgraphy, BIBLIOmania, BIBLIOphile)
bio-
life, living matter (BIOgraphy, BIOlogy, BIOsphere)
blast-, blasto
cell, primitive, immature cell (BLASTula, fibroBLAST, BLASTOdem)
burs-
pouch, purse (BURSar, BURSary, disBURSe)
calc-
stone (CALCite, CALCium, CALCification)
cand-
glowing, iridescent (CANDid, CANDle, inCANDescent)
capt-, cept-, ceive-
take, hold (interCEPT, perCEIVE, CAPTivating)
cardi-, cardio-
heart (CARDIac, CARDIOgenic, CARDIOlogist)
carn-, carni-
flesh, meat (CARNIvorous, inCARNate, CARNal)
cata-
down, against completely, intensive, according to (CATAclysm, CATAlog, CATAstrophe)
caust-, caut-
to burn (CAUTerize, CAUSTic, holoCAUST)
cede-, ceed-, cess-
go, yield (exCEED, reCEDE, acCESSible)
celer-
fast (acCELERate, deCELERate)
cent-, centi-
hundred, hundredth (CENTennial, CENTImeter, CENTury)
centr-, centro-, centri-
center (egoCENTRIc, ecCENTRIc, CENTRIfugal)
cephal-, cephalo-
head (enCEPHALitis, CEPHALic, CEPHALOpod)
cerebr-, cerebro-
brain (CEREBRal, CEREBRate, CEREBROspinal)
cert-
sure (asCERTain, CERTain, CERTify)
chrom-, chromo-, chromat-, chromato-, chros-
color, pigment (aCHROMatic, CHROMium, CHROMAtics)
chron-, chrono
time (CHRONic, CHRONOlogical, synCHRONize)
chrys-, chryso-
gold, yellow (CHYRSanthemum, heliCHRYSum, CHRYSOlite)
cide-, cise-
cut, kill (homiCIDE, inCISor, insectiCIDE)
circum-, circle-
around, about (CIRCUMnavigate, CIRCUMscribe, CIRCUMspect)
claim-, clam-
shout, speak out (CLAmor, exCLAIM, proCLAMation)
clar-
clear (CLARification, CLARify, deCLARe)
clud-, clus-
close (conCLUSion, exCLUSion, seCLUDe)
cline-
lean (inCLINation, inCLINE, reCLINE)
co-
with, together, joint (COauthor, COeducation, COhousing)
col-
together, jointly (COLlaborate, COLlision, COlloquial)
com-
together, common (COMmemorate, COMposition, COmmune)
cogn-, cogni-
know (COGNItion, inCOGNIto, reCOGNize)
con
with, jointly (CONcur, CONtemporary, CONvention)
contra-, contro-
against, opposite (CONTRAdict, CONTRAflow, CONTRAception, CONTRAry, CONTROversy)
corp-, corpo-
body (CORPOration, CORpse, CORPOral)
cosm-, cosmo-
universe (COSMOnaut, COSMOs, microCOSM)
counter-
opposite, contrary opposing (COUNTERact, COUNTERmand, COUNTERoffensive)
cranio-
skull (CRANIOlogy, CRANIum, CRANIal)
cred-
believe (CREDence, CREdulous, inCREDible)
cruc-
cross (CRUCial, CRUCifix, exCRUCiating)
crypto-
hidden, secret (CRYPTic, CRYPTOgraphy, enCRYPT)
cumul-
mass, heap (acCUMULate, CUMULative)
curr-, curs-
run (conCURRent, CURRent, CURSive)
cycl-
circle, ring (biCYCLe, CYCLe, CYCLone)
de-
reduce, away, down, remove (DEcelerate, Dethrone, DEbug)
dec-, deca-, deka-,
ten (DECade, DECAthlon, DECember)
deci-
one tenth (DECIliter, DECImate, DECIbel)
dem-, demo-
people (DEMOcracy, DEMOgraphic, epiDEMic)
demi-
half, less than (DEMItasse, DEMImonde)
dendr-, dendri-, dendri-
tree (philoDENDRon, DENDROchronology, DENDRIform)
dent-, dont-
tooth (DENTal, DENTist, DENTures)
derm-, derma-
skin (DERMAtologist, pchyDERM, DERMAtitis)
di-, diplo-
two, twice (DIchromatic, DIPLOma, DIlemma)
di-, dis-
apart, away, not, to the opposite (DIgression, DISappear, DISsect)
dia-
through, between, apart, across (DIAbetes, DIAgnosis, DIAlog)
dict-
speak (contraDICT, preDICTion, DICTate)
domin-
master (DOMINate, DOMIneering, preDOMINate)
don-, donat-
give (DONATion, DONor, parDON)
duc-, duct-
lead (conDUCT, eDUCate, deDUCTion)
du-, duo-
two, twice (DUplicate, DUet, DUO)
dur-
harden, to last, lasting (DURable, DURation, enDURing)
dyn-, dyna, dynam-
power, energy, strength (DYNAMo, DYNAMic, DYNAMite)
dys-
abnormal, bad (DYSpepsia, DYStopia, DYSlexia)
e-
out, away (Eloquent, Emissary, Eject)
ego-
self (EGOtistic, alter EGO, EGOmania)
em-, en-
into, cover with, cause (EMpathy, EMpower, ENgorge)
endo-
within, inside (ENDOtherm, ENDOcrine, ENDOgamy)
enn-, enni-, anni-
years (bicentENNIal, centENNIal, perENNIal)
en-, in-
inside, inwards (ENvision, ENclose, INwards)
ep-, epi-
on, upon, over, among, at, after, to, outside (EPIdemic, EPIlogue, EPIcenter)
equ-, equi-
equal, equally (EQUIdistant, EQUanimity, EQUation)
erg-, ergo-
work (ERGOnomics, enERGy, enERGetics)
esth-, aesth-
feeling, sensation, beauty (ESTHetician, AESThetic, kinESTHesia)
ethno-
race, people (ETHNic, ETHNOcentric, ETHNOlogy)
eu-
good, well (EUphemism, EUphonious, EUphoria)
Ex-
from, out (EXcavate, EXhale, EXtract)
extra-, extro-
outside, beyond (EXTRAordinary, EXTRAterrestrial, EXTROvert)
fac-, fact-
make, do (artiFACT, FACTory, maleFACT)
fer-
bear, bring, carry (conFER, FERry, transFER)
fid-
faith (conFIDe, FIDelity, FIDuciary)
flect-
bend (deFLECT, inFLECTion, FLExible)
flor-, flora-, fleur-
flower (FLORist, FLORAl, FLORA)
for-
completely (used to intensify the meaning of a word) (FORsaken, FORfeited, FORgiven)
fore-
in front of, previous, earlier (FOREbear, FOREbode, FOREcast)
form-
shape (conFORMity, FORMatio, reFORMatory)
fract-, frag-
break (FRACTure, FRAGile, FRAGment FRACTion)
fug-
flee, run away, escape (FUGitive, reFUGe, reFUGee)
funct-
perform, work (deFUNCT, FUNCTion, malFUNCTion)
fus-
pour (conFUSion, FUSe, inFUSe)
gastr-, gastro-
stomach (GASTRic, GASTROnomy, GASTRitis)
gen-, geno-, gene-, genesis-
birth, production, formation, kind (GENEalogy, GENEration, GENEtic)
geo-
earth, soil, global (GEOgraphy, GEOlogy, GEOponics)
ger-
old age (GERiatrics, GERontocracy, GERontology)
giga-
a billion (GIGAbyte, GIGAhertz, GIGAwatt)
gon-
angle (decaGON, diaGONal, octaGON)
gram-
letter, written (diaGRAM, GRAMmar, teleGRAM)
gran-
grain (GRANary, GRANola, GRANule)
graph-, graphy-
writing, recording, written (GRAPHology, autoGRAPH, seismoGRAPH)
grat-
pleasing (GRATify, GRATeful, GRATuity)
gyn-, gyno, gyne-
woman, female (GYNEcology, GYNEphobia, GYNEcoid)
gress-, grad-, grade-, gradei-, gradi
to step, to go (diGRESSion, proGRESS, GRADual)
hect-, hecto-, hecat-,
hundred (HECTOliter, HECTare, HECTOmeter)
helic-, helico-
spiral, circular (HELICOpter, HELIx, HELICOn)
heli-, helio-
sun (HELIOtropism, HELIOgraph, HELIanthus)
hemi-
half, partial (HEMIcycle, HEMIsphere, HEMIstich)
hem-, hemo-, hema-
blood (HEMOrhage, HEMOrrhoids, HEMOglobin)
hepa-
liver (HEPAtitis, HEPAtoma, HEPAtotoxic)
hept-, hepta-
seven (HEPTAgon, HEPTAteuch, HEPTAmeter)
herbi-
grass, plant (HERBIcide, HERBIvorous, HERBal)
hetero-
different, other (HETEROgenous, HETEROnyms, HETEROdox)
hex-, hexa-
six (HEXAgon, HEXAmeter, HEXApod)
histo-
tissue (HISTOlogy, HISTOchemistry)
homo-, homeo-,
like, alike, same (HOMOgeneous, HOMOnym, HOMEOpath)
hydr-, hydro-
liquid, water (HYDRate, HYDROphobia, HYDROponics, HYDRAulic)
hygr-, hygro-
moisture, humidity (HYGROmeter, HYGROgraph)
hyper-
too much, over, excessive, beyond (HYPEractive, HYPERcritical, HYPERtension)
hyp-, hypo-
under (HYPOglycemia, HYPOthermia, HYPOthesis)
iatr-, iatro-
medical care (gerIATRics, pedIATRician, podIATRy)
icon-, icono-
image (ICON, ICONOlogy, ICONOclast)
idio-
peculiar, personal, distinct (IDIOmatic, IDIOsyncracy, IDIOt)
il-, in-
in, into (ILluminate, INnovation, INspection)
ig-, il-, im-, in-, ir-
not, without (ILlegal, IMpossible, INappropriate, IRresponsible)
imag-
likeness (IMAGe, IMAGintive, IMAGine)
infra-
beneath, below (INFRAstructure, INFRAred)
inter-
between, among, jointly (INTERnational, INTERsection, INTERcept)
intra-, intro-
within, inside (INTRAstate, INTRAvenous, INTROvert)
ir-
not (IRredeemable, IRreformable, IRrational)
iso-
equal (ISObar, ISOmetric, ISOthermal)
ject-
throw (eJECT, interJECT, proJECT)
jud-
law (JUDgment, JUDicial, JUDiciary)
junct-
join (conJUNCTion, disJUNCTion, JUNCTion)
juven-
young (JUVENile, reJUVENate)
kilo-
thousand (KILObyte, KILOmeter, KILOgram)
kine-, kinet, mat-
motion, division (KINETics psychoKINEsis, teleKINEsis. cineMATography)
lab-
work (colLABorate, eLABorate, LABorious)
lact-, lacto-
milk (LACTTe, LACTOse, LACTic acid)
later-
side (biLATERal, uniLATERal)
leuk-, leuko-, leuc-, leuco-
white, colorless (LEUKemia, LEUKOcyte, LEUCine)
lex-
word, law, reading (LEXicology, aLEXia, ilLEgal)
liber-
free (LIBERate, LIBERtine, LIBERty)
lingu-
language, tongue (LINGUist, multiLINGUal, LINGUine)
lip-, lipo-
fat (LIPOsuction, LIPase, LIPoid)
lite-, ite-, lith-, litho-
mineral, rock, fossil (apatITE, granITE, monoLITH)
loc-
place (disLOCate, LOCation, reLOCate)
log-, logo-
word, doctrine, discourse (LOGic, monoLOGue, anaLOGy)
loqu-, locu-
speak (eLOQUent, LOQUacious, eLOCUation)
luc-
light (eLUCidate, LUCid, transLUCent)
lud-, lus-
to play (preLUDe, ilLUSion, deLUDe)
lumin-
light (ilLUMINate, LUMEN)
lun-, luna-, luni-
moon (LUNar, LUNarscape, LUNatic)
macro-
large, great (MACROevolution, MACROmolecule, MACROeconomics)
magn-, magna-, magni-
great, large (MAGNIfy, MAGNIficent, MAGNate)
mal-, male-
bad, ill, wrong (MALcontent, MALaria, MALicious)
man-, mani-, manu-
hand (MANeuver, MANUal, MANUscript)
mand-
to order (comMAND, deMAND, MANDate)
mania-
madness, insanity, excessive desire (biblioMANIA, egoMANIA, MANIAc)
mar-, mari-
sea (MARIna, MARItime, subMARIne, aquaMARIne)
mater-, matr-, matri-
mother (MATERnal, MATERnity, MATRIarch)
max-
greatest (MAXimal, MAXimize, MAXimum)
medi-
middle (MEDIeval, MEDIum, MEDIocre)
mega-
great, large, million (MEGApolis, MEGAphone, MEGAstructure)
melan-, melano-
black (MELANcholy, MELANOma, MELOdrama)
memor-, memori-
remember (comMEMORate, MEMORIal, MEMORy)
merge-, mers-
dip, dive (imMERGE, imMERSe,subMERGE)
meso-
middle (MESOamerica, MESOn)
meta-
change, after, beyond, between (METAphysics, METAmorphosis)
meter-, metr-, metry-
measure (audioMETER, chronoMETER, METRic)
micro-
very small, short, minute (MICRObe, MICROchip, MICROscope)
mid-
middle (MIDriff, MIDterm, MIDway)
migr-
move (imMIGRant, MIGRant, MIGRation)
milli-
onethousandth (MILLImeter, MILLIbar, MILLIliter)
min-, mini-
small, less (MINI, MINuscule, MINutiae)
mis-, miso-
bad, badly, wrong, wrongly, to hate (MISbehave, MISprint, MISnomer)
miss-, mit-
send, let go (disMISS, MISSile, eMIT, adMITtance)
mob-
move (imMOBolize, MOBile, MOBility)
mon-, mono-
one, single, alone (MONOchromat, MONOlogue, MONOtheism)
mot-, mov-
move (MOTion, MOTivate, proMOTe, reMOVable)
morph-, morpho-
form (metaMORPHosis, enDORPHins, aMORPHous)
mort-
death (imMORTal, MORTal, MORTician)
multi-
many, more than one or two (MULTIcolored, MULTImedia, MULTItasking)
mut-
change (imMUTable, MUTant, MUTate)
my-, myo-
muscle (MYOcardium, MYasthenia, MYosin)
narr-
tell (NARRate, NARRative, NARRator)
nat-
born (inNATe, NATal, NATural)
nav-
ship (circumNAVigate, NAVal, NAVigate)
necr-, necro-
dead, death (NECROphil, NECROsis, NECROlogy)
neg-
no (NEgate, NEGative, reNEGe)
neo-
new, recent (NEOclassic, NEOcolonism, NEOnatal)
nephr-, nephro-
kidney (NEPHRitis, NEPHROtomy, NEPHRon)
neur-, neuro-
nerve (NEURalgia, NEIROlogist, NEUROtic)
nom-, nomin-
name (misNOMer, NOMINal, NOMInate)
non-
no, not, without (NONdescipt, NONfiction, NONsense)
not-
mark (NOTable, NOtarize, anNOTate)
noun-, nunc-
declare (anNOUNce, deNOUNce, eNUNCiate)
nov-
new (inNOVate, NOVelty, NOVice, reNOVate)
numer-
number (eNUMERate, NUMERology, NUMERous)
ob-, op-
in the way, against (OBject, OBscure, OPposition)
oct-, octa-, octo-
eight (OCTAgon, OCTOgenerian, OCTOpus)
ocu-
eye (binOCUlars, monOCUla, OCUlist)
od-
path, way (diODe, ODometer, triODe)
omni-
all (OMNIpotent, OMNIscient, OMNIvorous)
op-, opt-, ops-
eye, visual condition, sight (OPtic, OPTician, autOPSy
opt-
best (OPTimal, OPTimize, OPTimum)
ortho-
straight (ORTHodontist, ORTHOpedic, ORTHOgraphy)
osteo-
bone (OSTEOarthritis, OSTEOpathy, OSTEOlogy)
out-
goes beyond, surpasses, exceeds (OUTgoing, OUTdoing, OUTdoor)
over-
excessive (OVERconfident, OVERstock, OVERexcited)
oxy-
sharp (OXYmoron, OXYdize)
pale-, paleo-
ancient (PALEOntology, PALEOgraphy, PALEOlithic)
pan-
all, any, everyone (PANacea, PANorama, PANdemic)
para-
beside, beyond, abnormal, assistant (PARAsite,PARAllel, PARAgraph)
para- (version 2)
protection from (PARAchute, PARAsol)
pater-, patr-, patri-
father (PATERnal, PATERnity, PATRIarch)
path-
feeling, emotion (antiPATHy, aPATHy, emPATHy)
ped-, pedi-, pede-
foot, feet (PEDal, PEDEstrian, PEDIcure)
pel-
drive, force (comPEL, exPEL, rePEL)
pent-, penta-
five (PENTAgon, PENTAgram, PENTAthlon)
pept-, peps-
digestion, (dysPEPSia, PEPTic, PEPSin)
per-
through, throughout (PERmanent, PERmeate, PERsist, PERennial)
peri-
around, enclosing (PERIodontal, PERIpheral, PERImeter)
phag-, phage-
to eat (esoPHAGus, anthropopPHAGy, sarcoPHAGy, xyloPHAGous)
phil-, philo-
love, friend (PHILanthropist, PHILOlogy, PHILOsophy, biblioPHIL)
phon-, phono-, phone-, phony-
sound (cacoPHONY, microPHONE, PHONEtic)
phot-, photo-
light (PHOTOgenic, PHOTOgraph, PHOTon)
phyll-, phyllo-
leaf (chloroPHYLL, PHYLLOtaxis, PHYLLite)
phys-
nature, medicine, the body (PHYSical, PHYSician, PHYSique)
phyt-, phyto-, phyte-
plant, to grow (epiPHYTE, hydroPHYTE, neoPHYTE)
plas-, plast-, plasm-
to form, development, forming cells (protoPLASM, PLASTic, PLASTer)
plaud-, plod-, plaus-, plos-
approve, clap (apPLAUD, exPLOSion, PLAUSible)
pneum-, pneumo-
breathing, lung, air, spirit (PNEUMOnia, PNEUmatic, dysPNEa)
pod-, pode-
root (PODiatrist, PODium, triPOD)
poli-
city (metroPOLIs, POLIce, POLitics)
poly-
many, more than one (POLYchrome, POLYglot, POLYgon)
pon-
place, put (opPONent, postPONe)
pop-
people (POPular, POPulation, POPulist)
port-
carry (exPORT, PORTable, PORTer)
pos-
place, put (dePOSit, exPOSe, POSition)
post-
after, behind (POSTthumous, POSTpone, POSTscript)
pre-
earlier, before, in front of (PREamble, PREpare, PREdiction)
pro-
before, in front of, for, forward (PROgnosis, PROlogue, PROphet)
prot-, proto-
primitive, first, chief (PROTOtype, PROton, PROTOcol)
pseud-, pseudo-
wrong, false (PSEUDOnym, PSEUDOscience, PSEUDOpregnancy)
psych-, psycho-
mind, mental (PSYCHe, PSYCHic, PSYCHOlogy)
pugn-, pugna-, pung-
to fight (PUGNAcious, rePUGNant, PUNGent)
pul-
urge (comPULsion, exPULsion, imPULsive)
purg-
clean (PURGe, PURGatory, exPURGate)
put-
think (comPUTer, disPUTe, inPUT)
pyr-, pyro-
fire, heat (PYROtechnics, PYROmeter, PYRetic)
quad-, quadr-, quadri-
four (QUADRant, QUADrennium, QUADruped)
quart-
fourth (QUARTer, QUART, QUARTet)
quin-, quint-
five, fifth (QUINtett, QUINTessence, QUINtuple)
radic-, radix-
root (eRADICate, RADICal, RADIsh)
radio-
radiation, ray (RADIOactive, RADIOlogist)
ram-, rami-
branch (RAMIfication, RAMify, RAMus)
re-
again, back, backward (REbound, REwind, REaction, REcognize)
reg-
guide, rule (REGent, REGime, REGulate)
retro-
backward, back (RETROactive, RETROgress, RETROspect)
rhin-, rhino-
nose (RHINOceros, RHINOplasty, RHINOvirus)
rhod-, rhodo-
red (RHODOdendron, RHODium, RHODOpsin)
rid-
laugh (deRIDe, RIDicule, RIDiculous)
rrh-, rrhea-, rrhoea-, rrhag
flow, discharge (diaRRHEA, hemoRRHAGe, cataRRH)
rub-
red (RUBy, RUbella, biliRUBin)
rupt-
break, burst (bankRUPT, interRUPT, RUPTure)
san-
health (SANe, SANitary, SANitation)
scend-
climb, go (aSCEND, creSCENDo, deSCEND)
sci-
know (conSCIence, conSCIous, omniSCIent)
scler-, sclero-
hard (arterioSCLEROsis, multiple, SCLEROsis, SCLEROmeter)
scop-, scope- scopy-
see, examine, observe (microSCOPE, periSCOPE, teleSCOPE)
scrib-, script-
write, written (inSCRIBe, SCRIBe, deSCRIBe)
se-
apart (SEcede, SEclude, SErum)
sect-
cut (disSECT, interSECT, biSECT)
sed-, sid-, sess-
sit (reSIDe, SEDiment, SESSion)
self-
of, for, or by itself (SELF-discipline, SELF-respect, SELFish)
semi-
half, partial (SEMiannual, SEMIcircle, SEMIcircuous, SEMIannual)
sept-, septi-
seven (SEPTember, SEPTet, SEPTuagenarian)
serv-
save, keep (conSERVe, preSERVe, reSERVation)
sex-
six (SEXtet, SEXtuple, SEXagenarian)
SOL-
alone (deSOLate, SOLitary, SOLo)
sol- (version 2)
sun (SOLar, paraSOL, SOLarium)
somn-, somni-
sleep (inSOMNIa, SOMNIloquy, SOMNolent)
son-
sound (conSONant, SONorous, superSONic, uniSON)
soph-
wise (philoSOPHer, SOPHisticated, SOPHism)
spec-, spect-, spic-
see, look (circumSPECt, retroSPECtive, SPECtator)
sphere-
ball (bioSPHERE, hemiSPHERE)
spir-
breathe (inSPIRe, tranSPIRe, SPIRit)
sta-
stand (STAble, STAgnant, STAtionary)
stell-
star (conSTELLation, interSTELLar, STELLar)
struct-
build (conSTRUCT, deSTRUCTion, STRUCTure, infraSTRUCTure)
sub-
under, lower than, inferior to (SUBmarine, SUBmerge, SUBstandard)
sum-
highest (SUM, SUMmation, SUMmit)
super-
higher in quality or quantity (SUPER bowl, SUPERior, SUPERsonic)
sy-, sym-, syn-, syl-, sys-
together, with, same (SYMmetry, SYNergy, SYNchronize)
tact-, tang-
touch (conTACT, TACTile, TANGible, inTACT)
tax-, taxo-
arrangement (synTAX, TAXonomy, aTAXia)
techno-
technique, skill (TECHNOlogy, TECHNOcracy, TECHNOlogically)
tel-, tele-, telo
far, distant, complete (TELEphone, TELEscope, TELEvision, TELEcommuting)
temp-, tempor-
time (conTEMPORary, TEMPORal, TEMPORary)
ten-, tin-, tent-
hold (conTINent, deTENTion, TENacious)
ter-, trit-
rub (atTRITion, deTRITus, TRITe)
term-, termina-
end, limit (deTERMine, TERMINAte, exTERMINAte)
terr-, terra-, terri-
land, earth (extraTERRestrial, TERRAin, TERRItory)
tetra-
four (TETRApod, TETRArchy, TETRose)
the-
put (biblioTHEca, THEme, THEsis)
the-, theo-
god (monoTHEism, polyTHEism, THEOlogy)
therm-, thermo-
heat (THERMal, THERMOs, THERMOstat)
tort-
twist (conTORTion, disTORT, reTORT)
tox-
poison (deTOXification, TOXic, TOXicology)
tract-
pull, drag (atTRACT, disTRACT, TRACTor)
trans-
across, beyond, through (TRANScontinental, TRANSfer, TRANSport)
tri-
three, once in every three, third (TRIangle, TRIathlon, TRIcycle)
ultra-
beyond, extreme, more than (ULTRAhigh, ULTRAmodern, ULTRAsonic)
un-
not, opposite of, lacking (UNabridged, UNfair, UNfriendly)
uni-
one, single (UNIcycle, UNIlateral, UNIque, UNIson)
urb-
city (subURB, URBan, URBanology)
vac-
empty (eVACuate, VACant, VACation)
ven-, vent-
come (circumVENT, conVENtion, interVENe)
ver-, veri-,
truth (VERacious, VERacity, VERIfy)
verb-
word (VERBalize, adVERB, proVERB)
vers-, vert-
turn (reVERSe, introVERT, VERSion, controVERSy)
vice-
acting in place of, next in rank (VICE-president)
vid-
see (eVIDent)
vince-, vic-
conquer (conVINCE, inVINCible, VICtory)
vis-, vid-
see (VISion, enVISion, eVIDent)
viv-, vivi-, vit-
live, life (reVIVal, VITal, VIVacious)
voc-, voci-
voice, call (adVOCate, equiVOCate, VOCalize)
vol-, voli-, volu-
wish, will (beneVOLent, VOLItion, VOLUntary)
vor-, vour-
eat (carniVORous, VORacious, deVOUR)
xanth-
yellow (XANTHium, XANTHochromia, XANTHogenic)
xen-, xeno-
foreign (XENOphobic, XENOgenesis, XENOphile)
xer-, xero-, xeri-
dry (XEROphyte, XEROgraphy, XERIc)
xyl-
wood (XYLocarp, XYLoid, XYLophone)
zo-, zoo-
animal life (ZOOlogy, ZOOid, ZOOplankton)
zyg-, zygo-
pair (ZYGote, ZYGOmorphic)