afterwards

after-

aftertaste;afterthought

against

anti-

anti-war;anti-capitalist

opposite

anti-

anti-clockwise;anti-globalisation; antisocial

byyourself/itself

auto-

autobiography;autobiographical; automatic

twoor twice

bi-

bicycle;bilingual; bimonthly (twice a month)

together

co-

co-operate;co-author

reduce

de-

degenerate;defuse; devalue

remove

de-

decode;deforestation; deregulate

not

dis-

disagree;disbelief; dishonest; disloyal; dissimilar

opposite

dis-

disappear;disconnect; disqualify

toa lower level

down-

downgrade;downhill; downstairs;downstream

former

ex-

ex-husband;ex-president; ex-student

before

fore-

forecast;foresee

infront

fore-

foreground;forename

not

il-;im-

illegal;illiterate; illogical; immoral; impatient; impossible

in-

inability;inconvenient; incorrect; inefficient;insensitive;intolerant; invisible

irrelevant;irregular; irresponsible

ir-

between

inter-

international;interact

badlyor wrongly

mal-

malfunction;malnourished; malpractice

huge

mega-

megarich;megastar

extremelysmall

micro-

microchip;microscope; microscopic

smallor short

mini-

minibus;miniskirt

bad/badlyor wrong/wrongly

mis-

misbehave;misplace; misunderstand; mismanagement

oneor alone

mono-

monolingual;monotonous

many

multi-

multinational;multi-purpose; multi-racial

not

non-

non-smoker;non-violent; non-profit-making

more/morethan

out-

outgrow;outnumber

outside

out-

outdoors;outskirts

toomuch or too long

over-

over-estimate;overgrown; overpopulation; oversleep; overwork

above/ontop

over-

overcoat;overhead; overlap

across

over-

overland;overseas

after

post-

postgraduate;post-war; postscript

before

pre-

pre-historic;pre-school; pre-war

infavour of

pro-

pro-European;pro-war

notreal

pseudo-

pseudo-intellectual;pseudonym

again

re-

rebuild;re-examine; re-unite; rewind

inanother way

re-

replace;rearrange; replant

half

semi-

semi-circle;semi-final

partly

semi-

semi-active;semi-conductor

below

sub-

semi-active;semi-conductor

lessor less important

sub-

subnormal;sub-committee; subplot

large,great or powerful

super-

supermarket;superstar; superpower

across

trans-

trans-continental;trans-Atlantic; transport

showingchange

trans-

transform;transformer; translation

three

tri-

triangle;trilogy

not

un-

uncomfortable;uncommon; uncrowded; unfriendly; unhelpful; uninteresting;unlikely; unlucky; unreliable; unspoilt; unstable; unusual

oppositeaction

un-

undo;undress; unlock; unpack; unzip; unrar

notenough

under-

undercooked;undernourished; underpaid

underneath

under-

underclothes;underline; underpass

toolittle/too small

under-

under-estimate;undersized

toa higher level

up-

upgrade;uplift; upstairs