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Barrons GRE Prefixes
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ab, abs


from, away from
abduct
lead away, kidnap
abjure
renounce [abdicate, relinquish, ละทิ้ง/ปฏิเสธ]


ad, ac, af, ag, an, ap, ar, as, at


to, forward
adit entrance
accord agreement, harmony affliction cause of distress
aggregation
collection
annexation addition
appease bring toward peace arraignment indictment [accusation]
assumption arrogance, taking for granted
attendance presence, the persons present


ambi


both
ambiguous
of double meaning
ambivalent
having two conflicting emotions


an, a


without
anarchy
lack of government
amoral
without moral sense


ante


before
antecedent
preceding event or word
antediluvian
ancient (before the flood)


anti


against, opposite
antipathy
hatred
antithetical
exactly opposite


arch


chief, first
archetype
original
archbishop
chief bishop


be


over, thoroughly
bedaub
smear over [ละเลง]
befuddle
confuse thoroughly


bi


two
bicameral
composed of two houses (Congress)
biennial
every two years


cata


down
catastrophe disaster
cataract
waterfall
catapult
hurl (throw down)


circum


around
circumnavigate
sail around (the globe)
circumspect
cautious (looking around)
circumscribe
limit (place a circle around)


com, co, col, con, cor


with, together
combine merge with
coeditor joint editor
collateral subordinate, connected (in addition to something)
conference meeting
corroborate confirm [affirm]


contra, contro


against
controvene
conflict with
controversy
dispute [arguing, การโต้เถียงอย่างรุนแรง]


de


down, away
debase
lower in value
decadence
deterioration [ความเสื่อมโทรม/ตกต่ำ]


demi


partly, half
demigod
partly devine being


di


two
dichotomy
division into two parts
dilemma
choice between two bad alternatives [สภาวะลำบาก entanglement]


dia


across
diagonal across a figure
diameter distance across a circle


dis, dif


not, apart
discord
lack of harmony
differ
disagree (carry apart)


dys


faulty, bad
dyslexia
faulty ability to read
dyspepsia
indigestion


ex, e


out
expel
drive out
eject
throw out


extra, extro


beyond, outside
extracurricular beyond the curriculum
extraterritorial beyond a nation's bounds
extrovert person interested chiefly in external objects and actions


hyper


above; excessively
hyperbole
exaggeration
hyperventilate
breathe at an excessive rate


hypo


beneath; lower
hypoglycemia low blood sugar


in, il, im, ir


not
inefficient not efficient
inarticulate not clear or distinct
illegible not readable
impeccable not capable of sinning; flawless
irrevocable not able to be called back


in, il, im, ir


in, on, upon
invite call in
illustration something that makes clear
impression effect upon mind or feelings
irradiate shine upon


inter


between, among
intervene come between
international between nations
interjection a statement thrown in


intra, intro


within
intramural
within a school
[mural = เกี่ยวกับผนัง]
[taking place with in a single institution especially college/school]
introvert
person who turns within himself


macro


large, long
macrobiotic
tending to prolong life
[healthy diet]
macrocosm
the great world (the entire universe)
[cosmo = โลก]


mega


great, million
megalomania
delusions of grandeur
[grandeur = ความสง่างาม, grand]
[ความหลงเพ้อไปกับความร่ำรวย]
[megalo = large]
megaton
explosive force of a million tons of TNT


meta


involving change
metamorphosis change of form


micro


small
microcosm miniature universe
microscopic extremely small


mis


bad, improper
misdemeanor minor crime; bad conduct
mischance unfortunate accident


mis


hatred
misanthrope person who hates mankind
misogynist woman-hater


mono


one
monarchy
government by one ruler
[archos = ruler]
monotheism
belief in one god


multi


many
multifarious having many parts
multitudinous numerous


neo


new
neologism
newly coined word
[neology, coinage] [logos = word]
neophyte
beginner; novice [newbie]


non


not
noncommittal undecided
[committal = การให้สัญญา]


ob, oc, of, op


against
obloquy
infamy, disgrace [dishonor]
[oblogui = to speak against]
occlude close; block out
offend insult [ทำให้โกรธ, ขุ่นเคือง]
opponent someone who struggles against; foe


olig


few
oligarchy
government by a few


pan


all, every
panacea
cure-all
[ยารักษาสารพัดโรค; catholicon]
[akeisthai = to cure]
panorama
unobstructed view in all directions


para


beyond, related
parallel similar
paraphrase restate; translate


per


through, completely
permeable
allowing passage through
[ซึมผ่านได้]
pervade
spread throughout


peri


around, near
perimeter
outer boundary
periphery edge


poly


many
polyglot
speaking several languages


post


after
posthumous
after death


pre


before
preamble
introductory statement
[amble = การย่าง, การเดิน]
premonition forewarning ab, abs$
from, away from
abduct
lead away, kidnap
abjure
renounce
abdicate, relinquish, ละทิ้ง/ปฏิเสธ
%
ad, ac, af,
ag, an, ap,
ar, as, at$
to, forward
adit entrance
accord agreement, harmony
affliction cause of distress
aggregation collection
annexation addition
appease bring toward peace
arraignment indictment [accusation]
assumption arrogance, taking for granted
attendance presence, the persons present
%
ambi$
both
ambiguous
of double meaning
ambivalent
having two conflicting emotions
%
an, a$    
without
anarchy
lack of government
amoral
without moral sense
%    
ante$
before
antecedent
preceding event or word
antediluvian
ancient (before the flood)
%    
anti$    
against, opposite
antipathy
hatred
antithetical
exactly opposite
%    
arch$    
chief, first
archetype
original
archbishop
chief bishop
%    
be$
over, thoroughly
bedaub
smear over [ละเลง]
befuddle
confuse thoroughly
%    
bi$
two
bicameral
composed of two houses (Congress)
biennial
every two years
%    
cata$
down
catastrophe
disaster
cataract
waterfall
catapult
hurl (throw down)
%    
circum$
around
circumnavigate
sail around (the globe)
circumspect
cautious (looking around)
circumscribe
limit (place a circle around)
%    
com, co, col,
con, cor$
with, together
combine merge with
coeditor joint editor
collateral subordinate, connected (in addition to something)
conference meeting
corroborate confirm [affirm]
%
contra, contro$    
against
controvene
conflict with
controversy
dispute [arguing, การโต้เถียงอย่างรุนแรง]
%    
de$
down, away
debase
lower in value
decadence
deterioration [ความเสื่อมโทรม/ตกต่ำ]
%    
demi$
partly, half
demigod
partly devine being
%    
di$
two
dichotomy
division into two parts
dilemma
choice between two bad alternatives
[สภาวะลำบาก entanglement]
%    
dia$
across
diagonal across a figure
diameter distance across a circle
%
dis, dif$
not, apart
discord
lack of harmony
differ
disagree (carry apart)
%    
dys$
faulty, bad
dyslexia
faulty ability to read
dyspepsia
indigestion
%    
ex, e$
out
expel
drive out
eject
throw out
%    
extra, extro$
beyond, outside
extracurricular
beyond the curriculum
extraterritorial
beyond a nation's bounds
extrovert
person interested chiefly in external objects and actions
%    
hyper$
above; excessively
hyperbole
exaggeration
hyperventilate
breathe at an excessive rate
%    
hypo$
beneath; lower
hypoglycemia
low blood sugar
%
in, il, im, ir$
not
inefficient not efficient
inarticulate
not clear or distinct
illegible
not readable
impeccable
not capable of sinning; flawless
irrevocable
not able to be called back
%    
in, il, im, ir$
in, on, upon
invite call in
illustration something that makes clear
impression effect upon mind or feelings
irradiate
shine upon
%    
inter$
between, among
intervene
come between
international between nations
interjection
a statement thrown in
%    
intra, intro$
within
intramural
within a school
[mural = เกี่ยวกับผนัง]
[taking place with in a single institution especially college/school]
introvert
person who turns within himself
%    
macro$
large, long
macrobiotic
tending to prolong life
[healthy diet]
macrocosm
the great world (the entire universe)
[cosmo = โลก]
%    
mega$
great, million
megalomania
delusions of grandeur
[grandeur = ความสง่างาม, grand]
[ความหลงเพ้อไปกับความร่ำรวย]
[megalo = large]
megaton
explosive force of a million tons of TNT
%    
meta$
involving change
metamorphosis
change of form
%
micro$    
small
microcosm
miniature universe
microscopic
extremely small
%    
mis$    
bad, improper
misdemeanor
minor crime; bad conduct
mischance
unfortunate accident
%    
mis$
hatred
misanthrope
person who hates mankind
misogynist
woman-hater
%    
mono$
one
monarchy
government by one ruler
[archos = ruler]
monotheism
belief in one god
%    
multi$
many
multifarious
having many parts
multitudinous
numerous
%    
neo$
new
neologism
newly coined word
[neology, coinage]
[logos = word]
neophyte
beginner; novice [newbie]
%    
non$    
not
noncommittal
undecided
[committal = การให้สัญญา]
%
ob, oc, of, op$    
against
obloquy
infamy, disgrace [dishonor]
[oblogui = to speak against]
occlude close; block out
offend insult [ทำให้โกรธ, ขุ่นเคือง]
opponent
someone who struggles against; foe
%    
olig$
few
oligarchy
government by a few
%    
pan$
all, every
panacea
cure-all [ยารักษาสารพัดโรค; catholicon]
[akeisthai = to cure]
panorama unobstructed view in all directions
%    
para$
beyond, related
parallel similar
paraphrase
restate; translate
%    
per$
through, completely
permeable
allowing passage through
[ซึมผ่านได้]
pervade
spread throughout
%    
peri$
around, near
perimeter outer boundary
periphery edge
%
poly$
many
polyglot
speaking several languages
%    
post$
after
posthumous
after death
%    
pre$
before
preamble
introductory statement
[amble = การย่าง, การเดิน]
premonition
forewarning
%    
prim$
first
primordial
existing at the dawn of time
[ในยุคกำเนิดโลก, ในขั้นเริ่มต้น]
primogeniture
state of being the first born
[สถานะการเป็นลูกคนโต]
%    
pro$
forward, in favor of
propulsive
driving forward
[having the power to propel]
proponent
supporter
%    
proto$
first
prototype
first of its kind
%    
pseudo$
false
pseudonym
pen name
%
re$
again, back
reiterate repeat
reimburse pay back
%    
retro$
backward
retrospect looking back
retroactive
effective as of a past date
%    
se$
away, aside
secede
withdraw
seclude
shut away
%    
semi$
half, partly
semiconscious
partly conscious
%    
sub, suc, suf,
sug, sup, sus$
under, less
subjugate bring under control
[overcome, พิชิต, ปราบปราม]
succumb yield; cease to resist
[surrender, จำนน]
suffuse spread through
suggest hint
suppress put down by force
suspend delay; temporarily cease
%    
super, sur$
over, above
supernatural above natural things
surtax additional tax
%    
syn, sym, syl, sys$
with, together
synchronize time together
sympathize pity; identify with
syllogism explanation of how ideas relate
system network
%    
tele$    
far
telegraphic communicated over a distance
%    
trans$    
across
transport
carry across
%
ultra$    
beyond, excessive
ultracritical
exceedingly critical
%    
un$    
not
unkempt
not combed; disheveled
[ยุ่งเหยิง]
%    
under$
below
underling
someone inferior
%    
uni$
one
unison
oneness of pitch; complete accord
[ความพร้อมเพรียงกัน]
%    
vice$
in place of
viceroy
governor acting in place of a king
[อุปราช]
%    
with$
away, against
withstand
stand up against; resist


prim


first
primordial
existing at the dawn of time
[ในยุคกำเนิดโลก, ในขั้นเริ่มต้น]
primogeniture
state of being the first born
[สถานะการเป็นลูกคนโต]


pro


forward, in favor of
propulsive
driving forward
[having the power to propel]
proponent supporter


proto


first
prototype
first of its kind


pseudo


false
pseudonym
pen name


re


again, back
reiterate repeat
reimburse pay back


retro


backward
retrospect
looking back
retroactive
effective as of a past date


se


away, aside
secede
withdraw
seclude
shut away


semi


half, partly
semiconscious
partly conscious


sub, suc, suf, sug, sup, sus


under, less
subjugate
bring under control
[overcome, พิชิต, ปราบปราม]
succumb
yield; cease to resist
[surrender, จำนน]
suffuse spread through
suggest hint
suppress put down by force
suspend delay; temporarily cease


super, sur


over, above
supernatural above natural things
surtax additional tax


syn, sym, syl, sys


with, together
synchronize time together
sympathize
pity; identify with
syllogism
explanation of how ideas relate
system network


tele


far
telegraphic
communicated over a distance


trans


across
transport carry across


ultra


beyond, excessive
ultracritical
exceedingly critical


un


not
unkempt
not combed; disheveled
[ยุ่งเหยิง]


under


below
underling
someone inferior


uni


one
unison
oneness of pitch; complete accord
[ความพร้อมเพรียงกัน]


vice


in place of
viceroy
governor acting in place of a king
[อุปราช]


with


away, against
withstand
stand up against; resist