Hilarious
来自Big Physics
early 19th century: from Latin hilaris (from Greek hilaros ‘cheerful’) + -ous. The sense ‘exceedingly amusing’ dates from the 1920s.
wiktionary
From Latin hilaris(“cheerful”), from Ancient Greek ἱλαρός(hilarós, “cheerful, merry”), from ἵλαος(hílaos, “propitious, gracious, kind”).
etymonline
hilarious (adj.)
1823, "cheerful," from Latin hilaris "cheerful, lively, merry, joyful, of good cheer" (see hilarity) + -ous. Meaning "boisterously joyful" is from 1835. Related: Hilariously.
