Synonyms of lively

1 Syllable
gay, fun, spry, buoyant, quick, brisk, yoyo, keen, spright, bright, funs, pert, fleet
2 Syllables
sprightlier, cheerier, vibrant, racier, witty, stirring, piquant, coltish, larkish, sprightly, zippier, flighty, playful, booner, fleetest, wittier, feisty, zestful, buzzing, go-go, mantling, sparkling, speedier, chirpy, cheery, astir, driving, keener, skittish, perkier, living, graphic, speedy, sporting, happy, flightier, dashing, brisker, fleeter, blithe, quick-fire, friskier, jumping, complex, dingdong, merrier, grooving, jocund, mirthful, hyper, perky, rubber, zappy, healthy, zingy, feistier, quicker, bracing, vivid, gung-ho, madcap, gumptious, speediest, rousing, keenest, chipper, nimblest, jazzier, nimble, jazzy, alert, happiest, cheerful, nimbler, racy, bustling, merry, merriest, quickest, snappy, happier, zingier, frisky, peppy, yo-yo, asap, bouncy, zippy, rapid, jokey, flightiest, waggish, banzai
3 Syllables
mercurial, industrious, kinetic, eventful, unfaded, vigorous, roborant, vehement, commoving, agile, spirited, lighthearted, go-getting, rapider, riproaring, coruscant, renewing, enjoyable, innerving, lightsome, vivacious, gut-busting, hilarious, back-slapping, takeover, involved, rapid-fire, proactive, rip-roaring, backslapping, dynamic, jocular, amusing, barreling, galvanic, refreshing, impellent, convivial, exciting, swashbuckling, gingery, take-charge, take-over, hard-driving, sanguine, gogetting, festive, appetent, quicksilver, undimmed, undoubtful, quickening
4 Syllables
supersonic, rosy-cheeked, alacritous, ultrasonic, propulsive, frolicsome, agitable, peaches-and-cream, unwithered, scintillating, animate, vinegary, vitalizing, expressive, volatile, high-spirited, exuberant, effervescent, alarmable, glad-handering, conversible, super-sonic, recreative, fairylike, easy-moving, blithesome, saturnalian, dynamical, animated, nimble-footed, entertaining, enthusiastic, ever-changing, characterful, wide-awake, stimulating, bubbleheaded, harefooted, energetic, enterprising
5 Syllables
sportspersonlike, reinvigorating, adrenalizing, invigorating, provocative
6 Syllables
rejuvenative