1. (a.) Of or pertaining to a sceptic or skepticism; characterized by skepticism; hesitating to admit the certainly Of doctrines or principles; doubting Of everything.

2. (a.) Doubting or denying the truth of revelation, or the sacred Scriptures.

Humean Pyrrhonic agnostic ambiguous capricious cautious chancy changeable cynical dicey disbelieving disinclined to believe disposed to doubt dissenting distrustful doubtful doubting dubious equivocal erratic fickle freethinking from Missouri guarded hard of belief hesitant hesitating impervious to persuasion in doubt incalculable inconvincible incredulous indecisive indemonstrable irresolute leery mistrustful mistrusting polysemous questioning scrupulous shy shy of belief skeptic suspecting suspicious touch-and-go unaccountable unbelieving uncertain unconfirmable unconvinced unconvincible uncredulous undivinable unforeseeable unpersuadable unpersuaded unpersuasible unpredictable unprovable unsure untrusting unverifiable unwilling to accept variable wary wavering whimsical