humorous (adj.)youdaoicibaDictYouDict[humorous 词源字典]
early 15c., "relating to the body humors," a native formation from humor, or else from Middle French humoreux "damp," from Old French humor (see humor (n.)). The meaning "funny" dates from 1705 in English. Related: Humorously; humorousness.[humorous etymology, humorous origin, 英语词源]