skeptical (adj.)
- agnostic
- ambiguous
- capricious
- cautious
- chancy
- changeable
- cynical
- dicey
- disbelieving
- dissenting
- distrustful
- doubtful
- doubting
- dubious
- equivocal
- erratic
- fickle
- guarded
- hesitant
- hesitating
- incalculable
- incredulous
- indecisive
- irresolute
- leery
- mistrustful
- polysemous
- questioning
- scrupulous
- shy
- suspecting
- suspicious
- touch-and-go
- unaccountable
- unbelieving
- uncertain
- unconvinced
- unforeseeable
- unpersuadable
- unpersuaded
- unpredictable
- unprovable
- unsure
- untrusting
- unverifiable
- variable
- wary
- wavering
- whimsical
