Humorous

wiktionary

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From Middle English humorous (compare Medieval Latin hūmorōsus), equivalent to humor +‎ -ous.

etymonline

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humorous (adj.)

early 15c., in physiology and medicine, "relating to the body humors, characterized by an abundance of humors," a native formation from humor (n.), or else from Medieval Latin humorosus. In Shakespeare also "whimsical, full of fancies" (1580s); "ill-humored, peevish, moody" (c. 1600). The meaning "funny, exciting laughter" dates from 1705 in English. Related: Humorously; humorousness.