Pyrrhonism apprehension awake a doubt be diffident be doubtful be dubious be possessive be skeptical be uncertain cageyness call in question caution challenge chariness contest diffidence disbelief disbelieve discredit dispute distrustfulness doubt doubtfulness dubiety dubiousness greet with skepticism half believe half-belief harbor suspicions have reservations hesitancy hesitation incredulity leeriness misdoubt misgive misgiving mistrust mistrustfulness qualm query question raise a question scepticism scruple scrupulousness self-doubt shadow of doubt skepticalness skepticism smell a rat suspect suspicion suspiciousness throw doubt upon total skepticism treat with reserve unbelieve uncertainty wariness