a. [f. med.L. ātrabīlāri-us (see ATRABILE) + -OUS.] a. Of or pertaining to black bile. b. Atrabilious, melancholy, hypochondriacal; splenetic, acrimonious.
1684. trans. Bonet’s Merc. Compit., III. 49. An Atrabilarious humour is but enraged and irritated by using hot things.
1732. Arbuthnot, Rules of Diet, 367. Atrabilarious dry Constitutions.
1882. J. Hawthorne, Fort. Fool, I. xx. Kate Roland was defending Mr. Sinclair against a rather atrabilarious onslaught from Miss Vivian.
