Free"think`er (?), n. One who
speculates or forms opinions independently of the authority of
others; esp., in the sphere or religion, one who forms opinions
independently of the authority of revelation or of the church; an
unbeliever; -- a term assumed by deists and skeptics in the
eighteenth century.
Atheist is an old-fashioned word: I'm a
freethinker, child.
Addison.
Syn. -- Infidel; skeptic; unbeliever. See
Infidel.