THESAURUS
elan
activity, alacrity, animal spirits, animation, anxiety, anxiousness, appetite, ardor, avidity, avidness, breathless impatience, brio, briskness, capersomeness, cheerful readiness, coltishness, dash, eagerness, enthusiasm, esprit, exuberance, forwardness, friskiness, frolicsomeness, gaiety, gamesomeness, gayness, glow, gust, gusto, heartiness, impatience, impetuosity, impetus, joie de vivre, keen desire, keenness, life, liveliness, lustiness, mettle, oomph, perkiness, pertness, piss and vinegar, playfulness, promptness, quickness, readiness, robustness, rollicksomeness, rompishness, skittishness, spirit, spiritedness, spirits, sportiveness, sprightliness, verve, vigor, vim, vitality, vivacity, warmth, zest, zestfulness, zing, zip
ROGET THESAURUS
elan
Impulse
N
impulse, sudden thought, impromptu, improvisation, inspiration, flash, spurt, improvisatore, creature of impulse, extemporaneous, impulsive, indeliberate, snap, improvised, improvisate, improvisatory, unpremeditated, unmeditated, improvise, unprompted, unguided, natural, unguarded, spontaneous, instinctive, extempore, extemporaneously, offhand, impromptu, a limproviste, improviso, on the spur of the moment, on the spur of the occasion, impulse, impulsion, impetus, momentum, push, pulsion, thrust, shove, jog, jolt, brunt, booming, boost, throw, explosion, propulsion, percussion, concussion, collision, occursion, clash, encounter, cannon, carambole, appulse, shock, crash, bump, impact,
elan, charge, beating, blow, dint, stroke, knock, tap, rap, slap, smack, pat, dab, fillip, slam, bang, hit, whack, thwack, cuff, squash, dowse, swap, whap, punch, thump, pelt, kick, punce, calcitration, ruade, arietation, cut, thrust, lunge, yerk, carom, carrom, clip, jab, plug, sidewinder, sidewipe, sideswipe, hammer, sledge hammer, mall, maul, mallet, flail, ram, rammer, battering ram, monkey, pile-driving engine, punch, bat, cant hook, cudgel, ax, dynamics, seismometer, accelerometer, earthquake detector, impelling, impulsive, impellent, booming, dynamic, dynamical, impelled, a hit, a very palpable hit.