1. (Science: medicine) One who attributes diseases of the state of the humors.
2. One who has some peculiarity or eccentricity of character, which he indulges in odd or whimsical ways. He [Roger de Coverley] . . . Was a great humorist in all parts of his life. (Addison)
3. One who displays humor in speaking or writing; one who has a facetious fancy or genius; a wag; a droll. The reputation of wits and humorists. (Addison)
Origin: cf. F. Humoriste.