n. One who attributes all diseases to a depraved state of the humors; a humoralist.n. A person who acts according to his humor; one easily moved by fancy, whim, or caprice; a person of eccentric conduct or uncertain temper.n. A person who possesses the faculty of humor; one who entertains by the exercise of a comical fancy; a humorous talker, writer, or actor; a wag; a droll.