| Prefix | meaning | example |
|---|
| a- | not | atypical |
| Anglo- | English | Anglo-German relations |
| ante- | before | antenatal (before birth) |
| anti- | against | anti-European, antisocial |
| auto- | self | autobiography |
| bi- | two | bicycle, bilingual, bimonthly |
| cent-, centi- | hundred | centenary, centimetre |
| circum- | around | to circumnavigate (to sail around) |
| co- | together | copilot, to coexist, cooperation |
| con- | with, together | context |
| contra- | against, opposite | to contradict, to contraflow |
| counter- | against, opposite | counterrevolution, counterproductive |
| de- | taking something away, the opposite | to defrost, to decentralize |
| deci- | one tenth | decilitre |
| dis- | reverse, opposite | to displease, to disembark |
| Euro- | European | Euro-MP (member of the European Parliament) |
| ex- | former | ex-wife, ex-president |
| extra- | 1. very, more than usual | extra-thin, extra-special |
| 2. outside, beyond | extraordinary, extraterrestrial |
| fore- | 1. before, in advance | to foretell, foreword |
| 2. front | foreground, forehead |
| in-, il-, im-, ir- | not | incorrect, invalid, illegible, immoral, impatient, impossible, irregular, irrelevant |
| inter- | between, from one to another | international, interracial |
| kilo- | thousand | kilogram, kilowatt |
| maxi- | most, very large | maximum |
| mega- | million, very large | megabyte, megastar |
| micro- | one millionth, very small | microgram, microrganism |
| mid- | in the middle of | mid-afternoon, mid-air |
| milli- | thousanth | milligram, millilitre |
| mini- | small | miniskirt, minibus, miniseries |
| mis- | bad or wrong, not | to misunderstand, to misbehave, to miscalculate |
| mono- | one, single | monolingual, monorail |
| multi- | many | multilingual |
| non- | not | nonsense, non-resident, non-smoker |
| out- | more, to a greater degree | to outdo, to outrun |
| over- | more than normal, too much | to overeat, to oversleep, to overestimate |
| post- | after | postwar |
| pre- | before | prepaid, preview |
| pro- | for, in favour of | pro-European, pro-democracy |
| quad- | four | quadruple, quadruplet |
| re- | again | to rewrite, to rebuild |
| semi- | half | semicircle, semidetached |
| sub- | 1. below, less than | subzero, subsonic |
| 2. under | subway, subtitles |
| super- | extremely, more than | superhuman, supersonic |
| tele- | far, over a long distance | telecommunications, television, telephoto lens |
| trans- | across, though | transatlantic, transcontinental |
| tri- | three | triangle, tricolour |
| ultra- | extremely, beyond a certain limit | ultra-modern, ultraviolet |
| un- | not, opposite, taking something away | uncertain, uncomfortable, unsure, to undo, to undress |
| uni- | one, single | uniform |
