Skeptical1. (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.
Thesaurus Entries
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