impetuous, gung ho, yearning, intense, anxious, concern, longing, importunate, greedy, glowing, warm, nuts, crazy, great, devouring, hot, keen, impatient, mad, avid, rabid, esurient, desirous, vehement
energetic (part of speech: adjective)
resolute (part of speech: adjective)
indefatigable, inexorable, persevering, committed, resolute, determined, fearless, unbending, persistent, ruthless, bold, tenacious, unyielding, tireless, valiant, unwavering, dedicated, unchangeable, courageous, deliberate, decided, true, decisive, tough, indomitable, implacable, devoted, reliable, loyal, strong-minded, unflinching, relentless, diligent, steadfast, stern, strong-willed, bullheaded, faithful, stubborn, thorough, steely, constant, intent, plucky, headstrong, willing, steady, serious, unshakeable, uncompromising, firm, dogged, resolved, iron-willed, set, dauntless, insistent, staunch
vigorous (part of speech: adjective)
exuberant, emphatic, burning, puissant, earnest, full-blooded, animated, frisky, mettlesome, peppy, lusty, spirited, fervent, zestful, fiery, hearty, agitated, afire, energetic, powerful, prolific, enthusiastic, passionate, virile, impassioned, zippy, sprightly, strenuous, strong, eager, industrious, vigorous, potent, lively, active, ardent, excited, ablaze
enthusiastic (part of speech: adjective)
- Nicholas Amsdorf, the intimate and trusted friend of Luther, was among the most zealous of the opponents of Majorism. - "Historical Introductions to the Symbolical Books of the Evangelical Lutheran Church", Friedrich Bente.
- A gentleman who lately studied here, and who is now a most efficient and zealous minister of the Church, speaks in very favourable terms of the judicious arrangement which has latterly marked the theological course at St. Bees; and improvements still more decided, it appears, are in contemplation under its present administration. - "The Ports, Harbours, Watering-places and Picturesque Scenery of Great Britain Vol. 1", William Finden.
- Now are you more zealous than honest, boy. - "Helmet of Navarre", Bertha Runkle.