mono- (monolingual)
one / single
bi- (bicycle)
two / twice / every two
multi- (multinational)
many
over- (overpaid)
more than (necessary)
under- (undercooked)
less than (necessary)
ex- (ex-politician)
former (was in the past, but not now)
re- (rewrite)
(do) again
extra- (extra-strong)
very
un- (unnecessary)
not
im- (impossible)
not
in- (inappropriate)
not
dis- (disorganised)
not
ir- (irresponsible)
not
non- (non-conformist)
not
en- / em- (enlarge)
cause to be / make into
mis- (misunderstood)
badly / wrongly
