predictable
unpredictable
usual
unusual
expected
unexpected
like (verb)
dislike
certain
uncertain
aware
unaware (=not understanding or realising something)
agreement
disagreement (have a disagreement with someone)
honest
dishonest
likely
unlikely (improbable)
approve of
disapprove of (feel something is bad or wrong
ability (you can't do something)
inability (have an inability to do something)
appear
disappear
experienced
inexperienced
happiness
unhappiness
satisfied
dissatisfied or unsatisfied
secure
insecure (people who have little confidence)
reliable
unreliable
understand
misunderstand
like (adjective)
unlike (different from, not similar to)
natural
unnatural
appropriate
inappropriate