Prefixes

Dictionary of Prefixes
 
prefix-
meaning of the prefix
examples of words using this prefix
comments regarding this prefix
a-
lacking, missing something
asymmetry, atypical, asynchronous, asymmetric, asexual
astro-
of the stars
astronomy, astronomical, astronomer, astrology, astronaut, astrologer, astrological, astrophysics
aer(o)-
of the air
aerospace, aeroplane, aerodynamic, aerodynamics, aero-engines, aerial, aerobics, aerobic, aerosol, aerodrome, aerobatic, aeronautics, aeration, aeronautical, aerobically
ambi-
two, both, double
ambidextrous, ambiguity, ambiguous, ambivalent, ambivalence, ambiguously
ante-
before, in front of
antenatal, ante-room, antechamber, anterior, antecedents, antediluvian
anti-
against, opposed to
antislavery, anti-semitism, anti-social, anti-government, antiseptic, anti-aircraft, anti-communist, anti-fascist, anti-racist, anti-apartheid, anti-war, anti-terrorist, anti-nuclear, antiracism, anti-inflammatory, anti-competitive, anti-climax, anti-inflation, ant-clockwise, antibody, antibiotics, antithesis, antidote, antipathy, antithetical
arch-
highest, to the highest degree, worst
archbishop, archdeacons, arch-enemy, arch-rivals, arch-conservative, arch-villain
audio-
of sound, hearing
audiovisual, audiometric, audiology
auto-
self
autobiography, automobile, autobiographical, automotive, autopilot, automatically, automatic, autonomy, autonomous, automated, automation, autocratic, autocracy, autonomously
bi-
two
bilingual, bicycles, bisexual, bicentenary, biplane, bi-monthly, bidirectional, bipartisan, bilaterally, bi-annual, bipedal, bi-weekly, binoculars, bifurcation, bisected
bio-
living, of life
biological, biology, biography, biochemical, biotechnology, biologists, biographer, biomass, biodiversity, biomedical, biosphere, biodegradable, biogas, biochemists, biofuels, biomechanical, biophysics
co-
together, with, joint
co-operation, co-operative, co-ordination, co-operate, co-ordinated, coincided, co-ordinator, correspondent, correspondence, collaboration, coherent, collision, correlated, collaborative, coherence, coefficient, correspondingly
contra-
against, opposed to
contraception, contraceptive, contrariwise, contraindicated, contraindications, contra-flow, contrast, contradiction, contradictory, contradict, contravene, contravention
counter-
against, opposite, opposed to
counteract, counter-productive, counter-attack, counterclaim, counter-revolutionary, counterbalance, counter-culture, counter-revolution, counterweight, counter-insurgency, counter-argument, counter-offensive, counter-offer, counter-intelligence, counter-measures, counterparts
de-
to reverse an action
decomposed, dehydrated, detoxification, decode, debugging. deregulated, demobilisation, destabilization, destabilizing
di-
two
dioxide, dipole, dimorphism, diversity, diverse, diode
dia-
across, through
diameter, diagonal, diagonally, diaphragm, dialogue, diametrically
dis-
lack of, the opposite of, not
disorder, disability, disadvantages, disagreement, disagree, disappearance, disbelief, disliked, dissatisfaction, disadvantaged, disapproval, disregard, dissatisfied, disarmament, disqualified
equi-
same, equal
equivalent, equivalence, equilateral, equidistant, equilibrium, equitable, equivocal, equitably
ex-
former, previous
ex-wife, ex-husband, ex-soviet, ex-servicemen, ex-service, ex- army, ex-soldier, ex-president, ex-girlfriend, ex-employee, ex-boyfriend, ex-minister, ex-king, ex-chairman
extra-
outside, beyond, very
extraordinary, extraordinarily, extracellular, extra-mural, extra-curricular, extra-marital, extraterrestrial, extra-time, extrajudicial, extra-sensory, extradition, extrapolation, extraneous, extrapolate
fore-
before, in front of
foreground, foresee, forearm, foresight, forestall, forefathers, forewarned, foreshore, foretaste, forecast, forehead, forefront, forefinger, forerunner, forecourt, foreword, forebears, foreboding, foregone, foreshadowed
geo-
of the earth
geography, geographical, geological, geology, geologist, geographer, geophysical, geomorphology, geothermal, geochemical, geometric, geometry
hyper-
extreme, exaggerated
hypertension, hyperactive, hypersensitive, hypersensitivity, hyperactivity, hyperventilation, hyperinflation, hypermarket
in-
the opposite of, not
informal, inadequate, insufficient, inappropriate, invisible, incredible, incapable, invalid, incomplete, inability, inequality
inter-
between, among
international, interaction, interactive, internationally, interact, inter-war, intercity, interrelated, intergovernmental, intersection, interplay, interdependence, interview, interpretation, intervention, interface, interference, intermediate, interval, interim, interpret, intervene, interfere, interruption, interviewer, interrupt, interpreter, interfering, interchange, intermittent
intra-
inside
intravenous, intracellular, intravenously, intra-industry, intra-oceanic, intra-regional
mal-
bad, badly
malnutrition, malpractice, maladministration, malfunction, malnourished, malformations, maltreatment
mini-
small
minibus, mini-bar, minigrams, minicomputer, mini-series, mini-skirt, minicab, minigolf, mini-boom, mini-breaks
mis-
wrongly, badly
misunderstanding, misuse, misfortune, misconduct, misplaced, mistrust, misinterpret, misunderstand
mono-
one
monopoly, monoxide, monotonous, monograph, monolithic, monochrome, monopolistic, monotony, monologue, monogamous, monotone, monogamy, monocle, monotheism, monolingual, monosyllables
multi-
many
multimedia, multinational, multiparty, multilateral, multi-million, multidisciplinary, multicultural, multiprocessing, multi-coloured, multi-user, multi-purpose, multi-racial, multi-storey, multi-millionaire, multi-faceted, multilingual, multi-ethnic, multiple, multiply, multitude, multiplier, multiplicity, multiplication
neo-
new
neo-classical, neonatal, neo-nazi, neo-marxist, neo-fascist, neo-gothic, neo-conservative, neoclassicism, neo-colonialism, neo-liberal, neolithic, neophyte, neologism
non-
not
non-existent, non, executive, non-stop, non-verbal, non-aligned, non-manual, non-standard, non-aggression
out-
do better, go beyond
outrun, outpaced, outwitted, outlast, outstrip, outlive, outmanoeuvred, outperform, outgrow, outnumber, outflank
over-
exceed, exaggerate, go beyond
overlap, overthrow, overflow, overweight, overdue, overcrowded, overdose, overgrown, overloaded, overjoyed
pan-
all, world-wide
pan-European, pan-Africanist, pan-Arab, pan-African, pan-American, panorama, panoramic
physio-
of the body
physiological, physiology, physiotherapist, physiotherapy, physiologically, physiologist, physiognomy, physiochemical
poly-
many
polygamy, polycarbonate, polysyllabic, polytechnic, polymer, polythene, polystyrene, polygon, polynomial, polymorphism, polyphonic, polyphony, polygonal, polyglot
post-
after
post-war, postgraduate, postmodern, postmodernism, post-industrial, postnatal, post-election, postdoctoral, post-colonial, post-retirement, post-revolutionary, post-glacial, post-tax,postponed, postscript, postponement, posterior, posterity, post-mortem, posthumous, postprandial, postoperative
pre-
before
premature, pre-tax, pre-war, prehistoric, prerequisite, preview, pre-school, pre-existing, presupposition, precondition, pre-election, pre-arranged, pre-recorded, pre-determined, predict, predecessor, preparation, precedent, precautions, preface, preventive, preparatory, prelude, precedence, premise, precursor, presuppose, precede
pro-
in favour of
pro-democracy, pro-active, pro-government, pro-life, pro-independence, pro-western, pro-European, pro-social, pro-choice, pro-nuclear
proto-
first, original
prototype, prototypical, proto-fish, protoplasm, protozoan
pseudo-
false, imitation
pseudo-scientific, pseudo-science, pseudo-religious, pseudo-history, pseudo-academic, pseudo-intellectual
psycho-
of the mind
psychological, psychology, psychologist, psychoanalysis, psychologically, psychoanalytic, psychotic, psychosis, psychotherapy, psychosomatic
re-
again, back
renewed, review, recycling, rebuilt, repayment, reproduced, reproductive, regeneration, reorganisation, regain, rebuilding, reunion, replay, renew, relocation, renamed, restructure
semi-
half
semi-final, semiconductor, semi-detached, semi-skilled, semi-circular, semi-automatic, semi-circle, semi-autonomous, semi-darkness, semitone, semi-finalists, semi-permanent, semi-official, semi-literate, semi-professional, semi-independent, semi-conscious
sub-
lower, less than, lower in importance or rank
subordinate, subsection, submarine, subconscious, subordination, subset, subdivided, subcommittee, sub-contractors, subterranean, subunits, subway
super-
greater, above, better
supermarket, supernatural, superimposed, superstar, superego, superstructure, superpower, superstore, superhuman, supercomputer, supersonic, superglue
sur-
over, above
surmounted, surpassed, surrealist, surrealism, surreal, surcharge, surpass, surmount, surtax
techno-
of applied science
technology, technological, technologies, technologically, technologist, technocrat, technocratic
thermo-
of heat, temperature
thermometer, thermostat, thermodynamics, thermonuclear, thermodynamic, thermostatic, thermostatically, thermoplastic
trans-
across, from one state to another
transformation, transform, transplant, transnational, transplantation, transatlantic, transport, transfer, transaction, transmission, translation, translated, transcription, transit, transitional, transportation, transmit, transcript, transmitter, transfusion, translucent, transparency
tri-
three
tripod, triennial, tricycle, triplane, tri-partite, triangle, triangular, trinity, triple, trilogy, tripled, triplets, triads, triplicate, triumvirate
ultra-
beyond, extreme
ultraviolet, ultrasound, ultrasonic, ultra-modern, ultra-right, ultra-left, ultra-conservative, ultra-thin, ultra-sensitive, ultralight
un- (1)
the opposite of, not
unemployment, unable, unlikely, unlike, unfortunately, unknown, unusual, undoubtedly, uncertainty, unexpected
un- (2)
to reverse an action, to deprive of
unveil, uncover, undo
under- (1)
too little, not enough
underestimate, underestimated, undervalued, underdeveloped, underrated, underprivileged, underfunding
under- (2)
beneath, lower than
underlying, underground, undergraduate, underwear, underline, undergrowth, under-secretary, underclass, underworld, understatement, undertones
uni-
one
unilaterally, unicorn, unidirectional, uniprocessor, unilinear, unisex, unipolar, unicellular, unicycle, unidimensional, united, union, unit, unique, unity, universal, uniform, unified, unification, unite, unitary, unison, uniqueness, unify<
vice-
deputy, next in rank
vice-president, vice-chairman, vice-captain, vice-chancellor, vice-admiral, vice-premier, vice-marshal, vice-presidential, vice-presidency, vice-principal
 
 
 

See also the suffixes page.