Synonyms and related words :
animated, antic, beardless, boyish, boylike, calflike, capersome, childish, childlike, elvish, exuberant, frisky, frolicsome, full of beans, gamesome, gay, girlish, girllike, hearty, impish, kiddish, kittenish, larkish, lively, maiden, maidenly, mischievous, playful, puckish, puerile, puplike, puppyish, puppylike, rollicking, rollicksome, rompish, skittish, spirited, sportive, sprightly, vital, vivacious, waggish, zestful, zippy