The Collaborative International Dictionary
Atrabilarious
Atrabilarian \At`ra*bi*la"ri*an\, Atrabilarious
\At`ra*bi*la"ri*ous\, a. [LL. atrabilarius, fr. L. atra bilis
black bile: cf. F. atrabilaire, fr. atrabile.]
Affected with melancholy; atrabilious.
--Arbuthnot.
Wiktionary
atrabilarious
a. Characterized by melancholy or gloom.