One who is yet undecided as to what is true; one who is looking or inquiring for what is true; an inquirer after facts or reasons.
- One who instinctively or habitually doubts, questions, or disagrees with assertions or generally accepted conclusions.
- One inclined to skepticism in religious matters.
- Philosophy An adherent of a school of skepticism.
- Philosophy A member of an ancient Greek school of skepticism, especially that of Pyrrho of Elis (360?-272? B.C.).