Synonyms of zealous

1 Syllable
keen, hot, ripe
2 Syllables
antsy, itchy, willing, pushy, grinder, heartiest, mad-dog, hearty, ultraist, earnest, keener, fervent, nutty, deep-felt, avid, burning, thirsting, fired, cliquish, nuttiest, gung-ho, rabid, wild-eyed, gumptious, keenest, raver, nuttier, smoking, jealous, viral, ardent, devout, valuing, heartier, loving, eager, banzai, fervid
3 Syllables
ambitious, fevered, industrious, afire, vigorous, vehement, heart-and-soul, spirited, hotblooded, patriotic, aspiring, overboard, takeover, fireball, proactive, fanatic, partisan, assiduous, possessed, partisans, obsessed, jingoistic, take-charge, take-over, hard-driving, appetent, self-starting, devoted, warm-hearted, warmblooded, frenetic, intense
4 Syllables
impassioned, possessory, corybantic, goal-oriented, highpowered, high-pressure, lovey-dovey, passionate, fanatical, all-consuming, wholehearted, animated, solicitous, enthusiastic, emotional, single-hearted, bedlamite, iron-willed, dedicated, enterprising
5 Syllables
conspiratorial, evangelistic, nationalistic, statesmanlike
6 Syllables
denominational