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Root (source) Meaning
English words
aster, astr (G) star
astronomy, astrology
audi (L)
to hear
audible, auditorium
bene (L)
good, well
benefit, benevolent
bio (G)
life
biology, autobiography
dic, dict (L)
to speak
dictionary, dictator
fer (L)
to carry
transfer, referral
fix (L)
to fasten
fix, suffix, affix
geo (G)
earth
geography, geology
graph (G)
to write
graphic, photography
jur, just (L)
law
jury, justice
log, logue (G) word,
thought,
speech
monolog(ue), astrology,
biology, neologism
luc (L)
light
lucid, translucent
manu (L)
hand
manual, manuscript
meter, metr
(G)
measure
metric, thermometer
op, oper (L)
work
operation, operator
path (G)
feeling
pathetic, sympathy, empathy
ped
child
pediatrics, pedophile
phil
love
philosophy, Anglophile
phys
body, nature
physical, physics
scrib, script
(L)
to write
Manuscript, scribble
tele (G)
far off
Television, telephone
ter, terr (L)
earth
Territory, exterrestrial
vac (L)
empty
vacant, vacuum, evacuate
verb (L)
word
verbal, verbose
vid, vis (L)
to see
video, vision, television
Prefixes showing quantity
Meaning
Prefixes in English Words
semi, hemi
half
semiannual, hemisphere
uni, mon, mono
one
unicycle, monarchy, monorail
bi, di
two
binary, bimonthly, dilemma,
dichotomy
cent, centi, heco
hundred
century, centimeter, hectoliter
milli, kilo
thousand
millimeter, kilometer
Prefixes showing negation
without, no, not
asexual, anonymous, illegal,
immoral, invalid, irreverent,
unskilled
non, ant, anti,
contra
not, absence of,
opposing, against
Non-breakable, antacid, antipathy,
contradict
counter
opposite to,
complement to
counterclockwise, counterweight
de
do the opposite of, dehorn, devitalize, devalue
remove, reduce
dis
do the opposite of, disestablish, disarm
deprive of
mis
wrongly, bad
a, il, im, in, ir,
un
misjudge, misdeed
Prefixes showing time
fore
before
antecedent, forecast, precede,
prologue
post
after
postwar
re
again
rewrite, redundant
Prefixes showing direction or position
super
above, over
supervise, supererogatory
trans
across, over
transport, translate
below, under
infrasonic, infrastructure,
subterranean, hypodermic
pro, pre
in front of
proceed, prefix
re
behind
recede
er, ex, ec
out of
erupt, explicit, ecstasy
into
injection, immerse, encourage,
empower
around
circumnavigate, perimeter
infra, sub, hypo
in, im, en, em
circum, peri
co, col, com, con, with
cor
symp, syn
coexist, colloquy, communicate,
consequence, correspond,
sympathy, synchronize