One who doubts the truth and reality of any principle or system of principles or doctrines. In philosophy, a Pyrrhonist or follower of Pyrrho, the founder of a sect of sceptical philosophers, who maintained that no certain inferences can be drawn from the reports of the senses, and who therefore doubted of every thing.

In theology, a person who doubts the existence and perfections of God, or the truth of revelation; one who disbelieves the divine original of the christian religion. Suffer not your faith to be shaken by the sophistries of sceptics.

Doubting; hesitating to admit the certainty of doctrines or principles; doubting of every thing.

Doubting or denying the truth of revelation. The sceptical system subverts the whole foundation of morals.