exhilaration (n.)

"act of enlivening or cheering; state of being enlivened or cheerful," 1620s, from Late Latin exhilarationem (nominative exhilaratio) "a gladdening," noun of action from past-participle stem of exhilarare "gladden, cheer," from ex "out, out of; thoroughly" (see ex-) + hilarare "make cheerful," from hilarus "cheerful" (see hilarity).