exhilarate (v.)

"to make cheerful, lively, or merry; render glad or joyous," 1530s, from Latin exhilaratus "cheerful, merry," past participle of exhilarare "gladden, cheer," from ex "out, out of; thoroughly" (see ex-) + hilarare "make cheerful," from hilarus "cheerful" (see hilarity). Related: Exhilarated; exhilarating.