vigorous

1 having active strength of body or mind he remains healthy and vigorous despite being over 80 years old Synonyms dynamic, energetic, flush, gingery, lusty, peppy, red-blooded, robust, vital Related Words animated, brisk, dashing, kinetic, lively, punchy, spirited, sprightly, vivacious; energized, enlivened, invigorated, vitalized; firm, fortified, mettlesome, mighty, powerful, puissant, strong; refreshed, rejuvenated, revitalized; able-bodied, athletic, beefy, brawny, burly, fit, hardy, husky, muscular, robustious, rugged, stalwart, stout, strapping, sturdy, tough, virile; hale, healthy, hearty, sound; capable, competent Near Antonyms delicate, effete, enervated, faint, feeble, frail, infirm, wan, weak, weakened; impotent, powerless, prostrate, prostrated, sapped, tired; indolent, lackadaisical, languid, lazy; invertebrate, nerveless, soft, spineless, wimpy; ill, unhealthy, unsound, unwell; broken-down, debilitated, decrepit, disabled, wasted, worn-out Antonyms dull, lethargic, listless, sluggish, torpid

2 able to withstand hardship, strain, or exposure vigorous and sturdy little sheep bred to live in mountainous regions Synonyms cast-iron, hard, hard-bitten, hardened, inured, rugged, stout, strong, sturdy, tough, toughened, hardyRelated Words flinty, leathery, resilient, stalwart; durable, enduring, everlasting, immortal, imperishable, lasting, permanent, stable, staunch (also stanch), staying, tenacious, unyielding; flourishing, prospering, thriving; able-bodied, brawny, muscular; fit, fortified, hale, healthy, husky, lusty, red-blooded, robust, sound, strapping, virile; annealed, seasoned, temperedNear Antonyms emasculated, enervated, enfeebled, exhausted, run-down, sapped, wasted, weakened, worn, worn out; crippled, debilitated, diseased, incapacitated, infirm, unsound; fragile, frail, puny; resistless, sensitive, susceptible, unresistant, vulnerable, yielding; mortal, perishable, temporary, transientAntonyms delicate, nonhardy, soft, tender, weak

3 marked by or uttered with forcefulness offered a vigorous dissent to the proposal Synonyms aggressive, assertive, dynamic, energetic, forceful, full-blooded, muscular, resounding, strenuous, vehement, emphatic, violentRelated Words decided, insistent, marked, pointed; absolute, categorical (also categoric), clear, plain, unambiguous, unequivocal; arresting, compelling, conspicuous, impelling, noticeable, strikingNear Antonyms guarded, mild, uncompelling, weak, wishy-washy; ambiguous, equivocal, halting, hesitant; understatedAntonyms nonassertive, nonemphatic, unemphatic

4 not showing weakness or uncertainty gave the bottle of sauce a vigorous shaking Synonyms forceful, hearty, iron, lusty, robust, solid, stout, strong, sturdy, firmRelated Words hard, ironclad, mighty, powerful, tough, unyielding; animated, brisk, energetic, frisky, jaunty, jazzy, lively, peppy, perky, spirited, sprightful, sprightly, springy, vital, vivacious, zippy; assured, certain, confident, sanguine, secure, sureNear Antonyms feeble, fragile, frail; limp, listless, spiritless; diffident, insecure, self-doubting; characterless, effete, frail, spineless, weakened, weak-kneed, wimpy, wishy-washyAntonyms uncertain, weak