What is another word for "madcap"?

Roget's Thesaurus (1911) lists these synonyms for "madcap": acrobat, and, bedlamite, bel, bon, buffoon, candidate, cap, caricaturist, charlatan, clown, corps, crank, crazy, dandy, dipsomaniac, dreamer, energumen, enthusiast, epigrammatist, errant, esprit, fanatic, fool, for, gaillard, green, guy, gypsy, harlequin, highflier, humorist, hypochondriac, idiot, jack, jester, joker, kleptomaniac, knight, life.