atrabilious [ˌætrəˈbɪlyəs] a.
1.) Affected by black bile or ‘choler adust’; melancholy, hypochondriac; splenetic, acrimonious (O.E.D. 2nd Ed.).
Etymology: From Latin atra bilis, black bile (translation of Greek melankholia): atra, black; + bilis, bile.
"She liked London constantly, and stood in defence of it against me and my atrabilious censures of it, never had for herself the least wish to quit it again, though I was often talking of that, and her practice would have been loyal compliance for my behoof" (Reminiscences, Thomas Carlyle, 1881).