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hilarity

/hɪˈlærəti/

Lively amusement or boisterous laughter

From Greek, via Latin hilar- (Cheerful).

noun
hilar-
Ancient Greek
Verified
ἱλαρός (hilarós)
“Cheerful, merry”

from Ancient Greek ἱλαρός (hilarós, “cheerful”). By surface analysis, Latin hilar(ō) +‎ -i- +‎ -ty.

Latin
Verified
hilaritās
“Cheerfulness”; source of the English noun

from Latin hilaritās (“cheerfulness”)

Middle English
AI-inferred
hilarity
Entered English by the mid-15th century, meaning merriment
Modern English
hilarity
“

A cheerful Greek word, hilarós, passed into Latin as hilaris, and from it Romans made hilaritās: cheerfulness, or merriment. The Romans even had festivals called Hilaria, celebrated for Cybele around the spring equinox with public rejoicing; the name sounds like a party invitation from antiquity. English picked up hilarity by the mid-15th century, keeping the old sense of high spirits rather than simply “something funny.” Etymonline also suggests a possible deeper connection with words for appeasing or reconciling—an intriguing hint that hilarity may have once carried the warmth of making peace, not just making people laugh.

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