competent, correct
incompetent, incorrect
active, sane
inactive, insane
possible, mature
impossible, immature
patient, polite
impatient, impolite
able, healthy, kind
unable, unhealthy, unkind
logical, legal, literate
illogical, illegal, illiterate
like, trust, honest
dislike, distrust, dishonest
sense, smoker
nonsense, non-smoker
place, understand
misplace, misunderstand