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Wordbuilding
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Prefixes change the meaning of the word, and suffixes usually change the part of speech of the word.
Verbs
| prefix | meaning | examples |
| re- | again or back | restructure, revisit, reappear, rebuild, refinance |
| dis- | reverses the meaning of the verb | disappear, disallow, disarm, disconnect, discontinue |
| over- | too much | overbook, oversleep, overwork |
| un- | reverses the meaning of the verb | unbend, uncouple, unfasten |
| mis- | badly or wrongly | mislead, misinform, misidentify |
| out- | more or better than others | outperform, outbid |
| be- | make or cause | befriend, belittle |
| co- | together | co-exist, co-operate, co-own |
| de- | do the opposite of | devalue, deselect |
| inter- | between | interact, intermix, interface |
| pre- | before | pre-expose, prejudge, pretest |
| sub- | under/below | subcontract, subdivide |
| trans- | across, over | transform, transcribe, transplant |
| under- | not enough | underfund, undersell, undervalue, underdevelop |
Suffixes used to form verbs with the meaning “cause to be”:
| suffix | example |
| -ise | stabilise, characterise, symbolise, visualise, specialise |
| -ate | differentiate, liquidate, pollinate, duplicate, fabricate |
| -fy | classify, exemplify, simplify, justify |
| -en | awaken, fasten, shorten, moisten |
Nouns
| prefix | meaning | examples |
| anti- | against | anticlimax, antidote, antithesis |
| co- | joint | co-founder, co-owner, co-descendant |
| dis- | the converse of | discomfort, dislike |
| ex- | former | ex-chairman, ex-hunter |
| In- | the converse of | inattention, incoherence, incompatibility |
| In- | inside | inpatient, |
| inter- | between | interaction, inter-change, interference |
| mal- | bad | malfunction, maltreatment, malnutrition |
| mega- | million | megabyte |
| mis- | wrong | misconduct, misdeed, mismanagement |
| mini- | small | mini-publication, mini-theory |
| mono- | one | monosyllable, monograph, monogamy |
| neo- | new | neo-colonialism, neo-impressionism |
| out- | separate | outbuilding, |
| poly- | many | polysyllable |
| pseudo- | false | pseudo-expert |
| re- | again | re-organisation, re-assessment, re-examination |
| semi- | half | semicircle, semi-darkness |
| sub- | below | subset, subdivision |
| super- | more than, above | superset, superimposition, superpowers |
| under- | below, too little | underpayment, under-development, undergraduate |
Suffix added to a verb (V), noun (N) or adjective (A) 
noun:
| suffix | meaning | examples | ||||
| -tion -sion | action/instance of V-ing | alteration, demonstration expansion, inclusion, admission | ||||
| -er | person who V-s something used for V-ing | advertiser, driver computer, silencer | ||||
| -ment | action/instance of V-ing | development, punishment, unemployment | ||||
| -ant -ent | person who V-s | assistant, consultant, student | ||||
| -age | action/result of V | breakage, wastage, package | ||||
| -al | action/result of V | denial, proposal, refusal, dismissal | ||||
| -ence -ance | action/result of V | preference, dependence, interference attendance, acceptance, endurance | ||||
| -ery/-ry | action/instance of V-ing place of V-ing | bribery, robbery, misery, refinery, bakery | ||||
| -er | person concerned with N | astronomer, geographer | ||||
| -ism | doctrine of N | Marxism, Maoism, Thatcherism | ||||
| -ship | state of being N | friendship, citizenship, leadership | ||||
| -age | collection of N | baggage, plumage | ||||
| -ity | state or quality of being A | ability, similarity, responsibility, curiosity | ||||
| -ness | state or quality of being A | darkness, preparedness, consciousness | ||||
| -cy | state or quality of being A | urgency, efficiency, frequency | ||||