Hi*lar"i*ty [L. hilaritas: cf. F. hilarit'e. See Hilarious.]
Boisterous mirth; merriment; jollity.
⇒ Hilarity differs from joy: the latter, excited by good news or prosperity, is an affection of the mind; the former, produced by social pleasure, drinking, etc., which rouse the animal spirits, is more demonstrative.
Syn. -- Glee; cheerfulness; mirth; merriment; gayety; joyousness; exhilaration; joviality; jollity.
© Webster 1913.