Of a person: having the principles of a free-thinker. Also: engaging in independent or unconventional thought. Cf. free-thinker, n.

Of, relating to, or characterized by liberalism or liberalists; liberal.

Of, relating to, or characterized by liberalism; inclining towards liberalism.

Theology (originally U.S.). Regarding many traditional beliefs as dispensable, invalidated by modern thought, or liable to change; open to the…