atrabilious (adj.)youdaoicibaDictYouDict[atrabilious 词源字典]
1650s, from Latin atra bilis, translating Greek melankholia "black bile" (see melancholy; also compare bile). Atra is fem. of ater "black, dark, gloomy," perhaps related to root of atrocity. Related: Atrabiliousness.[atrabilious etymology, atrabilious origin, 英语词源]