Dictionary (a.) Incapable of being demonstrated.Thesaurus agnostic ambiguous capricious chancy changeable dicey doubting equivocal erratic fickle hesitant hesitating incalculable indecisive irresolute polysemous skeptical touch-and-go unaccountable uncertain unconfirmable unconvinced undivinable unforeseeable unpersuaded unpredictable unprovable unsure unverifiable variable wavering whimsical |