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Classic usage
Reading level: hard
Estimated CEFR level: C2 — Proficiency
Estimated from word frequency; not an official CEFR classification.
From Latin hilaritās (“cheerfulness”), from hilaris (“cheerful”), from Ancient Greek ἱλαρός (hilarós, “cheerful”). By surface analysis, Latin hilar(ō) + -i- + -ty.
mirth, mirthfulness, glee, gleefulness
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Classic usage
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