un- (happy-unhappy,balanced-unbalanced)
ir- (regular-irregular,responsible-irresponsible)
in- (accurate-inaccurate,efficient-inefficient)
dis- (like-dislike,believe-disbelieve)
im- (possible-impossible,probable-improbable)
de- (centralize-decentralize. increase-decrease)
il- (legal-illegal, literate-illiterate)
non- (sense-nonsense, smoker-non-smoker)
(předpony)

Noun suffixes:
-er (teach-teacher)
-ment (pay-payment)
-ation (admire-admiration
-ity, -ty (stupid-stupidity)
-ness (dark-darkness)

Verb suffixes:
-ize (legal-legalize)
ify (pure-purify)

Averb suffixes:
-ly (quick-quickly)
-wards (down-downwards)

Adjective suffixes:
-y (smell-smelly)
-ic, -ical (poetry-poetic)
-ful (pain-painful)
-less (care-cereless)
-able (break-breakable)