Denying or questioning the tenets of especially a religion:
— A skeptical approach to the nature of miracles.

synonyms: disbelieving, sceptical, unbelieving.

Roget 989: irreligious; indevout^†; undevout^†; devoutless^†, godless, graceless; ungodly, unholy, unsanctified^†, unhallowed; atheistic, without God.    skeptical, freethinking; unbelieving, unconverted; incredulous, faithless, lacking faith; deistical; unchristian, antichristian^†.    worldly, mundane, earthly, carnal; worldly minded &c.. ... show more

Roget 485: unbelieving; skeptical, sceptical.    incredulous as to, skeptical as to; distrustful as to, shy as to, suspicious of; doubting etc. v.. doubtful etc. (uncertain) 475; disputable; unworthy of, undeserving of belief etc. 484; questionable; suspect, suspicious; open to suspicion, open to doubt; staggering, hard to believe, incredible, unbelievable, not to be believed, inconceivable; impossible etc. 471.    fallible etc. (uncertain) 475; undemonstrable; controvertible etc. (untrue) 495.    ... show more

Roget 487: incredulous, skeptical, unbelieving, inconvincible^†; hard of belief, shy of belief, disposed to doubt, indisposed to believe; suspicious, scrupulous, distrustful, cynical;

Marked by or given to doubt:
— A skeptical attitude.
— A skeptical listener.

synonyms: doubting, questioning, sceptical.

Polish: wątpiący