| Prefix | Meaning | Example |
| A-/an- | lacking in, lack of | asexual, anemic |
| A- | verb > predicative adjective with progressive aspect | afloat, atremble |
| Ante- | before | antebellum, antediluvian |
| Anti- | against | anti-war, antivirus, anti-human |
| Arch- | supreme, highest, worst | arch-rival, archangel |
| Be- | equipped with, covered with, beset with (pejorative or facetious) | bedeviled, becalm, bedazzle, bewitch |
| Co- | joint, with, accompanying | co-worker, coordinator, cooperation |
| Counter- | against, in opposition to | counteract, counterpart |
| De- | reverse action, get rid of | de-emphasise |
| Dis- | not, opposite of | disloyal, disagree |
| Dis- | reverse action, get rid of | disconnect, disinformation |
| En-/em- | to make into, to put into, to get into | enmesh, empower |
| Ex- | former | ex-husband, ex-boss, ex-colleague |
| Fore- | before | forearm, forerunner |
| In-/il-/im-/ir- | not, opposite of | inexact, irregular |
| Inter- | between, among | interstate, interact |
| Mal- | bad(ly) | malnourish |
| Mid- | middle | midlife |
| Mini- | small | minimarket, mini-room |
| Mis- | wrong, astray | misinformation, misguide |
| Out- | better, faster, longer, beyond | outreach, outcome |
| Over- | too much | overreact, overact |
| Pan- | all, worldwide | pan-African |
| Post- | after | post-election, post-graduation |
| Pre- | before | pre-election, pre-enter |
| Pro- | for, on the side of | pro-life |
| Re- | again, back | rerun |
| Self- | self | self-sufficient |
| Step- | family relation by remarriage | stepbrother |
| Trans- | across, from one place to another | transatlantic |
| Twi- | two | twibill, twilight |
| Ultra- | beyond, extremely | ultraviolet, ultramagnetic |
| Un- | not, opposite of | unnecessary, unequal |
| Un- | reverse action, deprive of, release from | undo, untie |
| Under- | below, beneath, lower in grade/dignity, lesser, insufficient | underachieve, underground, underpass |
| Up- |
| upgrade |
| Vice- | deputy | vice-president, vice-principal |
| With- | against | withstand |
| Afro- | relating to Africa | Afro-American |
| Ambi- | both | ambitendency |
| Amphi- | two, both, on both sides | amphiaster, amphitheater, amphibian |
| An-, a- | not, without | anemic, asymmetric |
| Ana-/an- | up, against | anacardiaceous, anode |
| Anglo- | relating to England | Anglo-Norman |
| Ante- | before | antenatal |
| Anti- | opposite | anti-clockwise |
| Apo- | away, different from | apomorphine |
| Astro- | star | astrobiology |
| Auto- | self | autobiography, automatic |
| Bi- | two | bicycle |
| Bio- | biological | biodegrade |
| Circum- | around | circumnavigate |
| Cis- | on this side of | cislunar |
| Con-/com-/col-/cor-/co- | together or with | confederation, commingle, colleague, correlation, cohabit |
| Contra- | opposite | contradict |
| Cryo- | ice | cryogenics |
| Crypto- | hidden, secret | cryptography |
| De- | down | depress |
| Demi- | half | demigod |
| Demo- | people | demography |
| Di- | two | dioxide |
| Dis-, di-, dif- | apart | differ, dissect |
| Down- | to make something lesser, lower or worse | downgrade |
| Du-/duo- | two | duet |
| Eco- | ecological | ecosystem |
| Electro- | electric, electricity | electro-analysis |
| Epi- | upon, at, close upon, in addition | epidermis |
| Euro- | European | Eurocentric |
| Ex-, e-, ef- | out of | export |
| Extra- | outside | extracurricular |
| Fin- | kinship | affinity |
| Franco- | French, France | Francophile |
| Geo- | relating to the earth or its surface | geography |
| Hetero- | different | heterosexual |
| Hemi- | half | hemimorphic |
| Homo- | same | homosexual |
| Hydro- | relating to water, or using water | hydroelectricity |
| Hyper- | above, over | hyperthermia |
| Hypo- | under or below something, low | hypothermia |
| Ideo- | image, idea | ideograph |
| Idio- | individual, personal, unique | idiolect |
| In- | in, into | insert |
| Indo- | relating to the Indian subcontinent | Indo-European |
| Infra- | below, beneath | infrared |
| Inter- | among, between | intercede |
| Intra- | inside, within | intravenous |
| Iso- | equal | isochromatic |
| Macr(o)- | long | macrobiotic |
| Maxi- | very long, very large | maxi-skirt |
| Mega-, megalo- | great, large | megastar, megalopolis |
| Meta- | after, along with, beyond, among, behind | meta-theory |
| Micro- | small | microbacillus |
| Midi- | medium-sized | midi-length |
| Mon(o)- | sole, only | monogamy |
| Multi- | many | multi-storey |
| Neo- | new | neolithic |
| Non- | not | nonexistent |
| Omni- | all | omnipotent, omnipresent |
| Paleo- | old | paleolithic |
| Para- | beside, beyond | parallel |
| Ped-/pod- | foot | pedestrian, podiatrist |
| Per- | through, completely, wrongly, exceedingly | permeate, permute |
| Peri- | around | periphrase |
| Photo- | light, photography, photograph | photoelectric |
| Poly- | many | polygon |
| Post- | after | postpone |
| Pre- | before | predict |
| Preter- | beyond, past, more than | preternatural |
| Pro- | substitute, deputy | proconsul |
| Pro- | before | procambium |
| Pros- | toward | prosthesis |
| Proto- | first, original | protoplasm, prototype |
| Pseudo- | false, imitation | pseudonym |
| Pyro- | fire | pyrokinetic |
| Quasi- | partly, almost, appearing to be but not really | quasi-religious |
| Retro- | backwards | retrograde |
| Semi- | half | semicircle |
| Socio- | society, social, sociological | sociopath |
| Sub-, su-, suc-, suf-, sug-, sum-, sup-, sur-, sus- | below, under | submerge, success, support, surreptitious, suspect, sustain |
| Super- | above, over | supervisor |
| Supra- | above, over | suprarenal |
| Sur- | above, over | surname, surreal, surrender |
| Syn-, sy-, syl-, sym-, sys- | together, with | synthesis, symbol, syllable, system |
| Tele- | at a distance | television |
| Trans- | across | transverse |
| Tri- | three | tricycle |
| Ultra- | beyond | ultraviolet |
| Uni- | one | unicycle |
| Up- | to make something greater, higher, or better | upgrade |