Entry Word: vigorous

Function: adjective

Meaning: 1 having active strength of body or mind <he remains healthy and vigorous despite being over eighty years old>

Synonyms dynamic, energetic, flush, gingery, lusty, peppy, red-blooded, robust, vital

Related Words animated, lively, spirited, sprightly, vivacious; energized, enlivened, invigorated, vitalized; firm, fortified, mettlesome, mighty, powerful, puissant, strong; refreshed, rejuvenated, revitalized; able-bodied, beefy, brawny, fit, fortified, hardy, husky, rugged, stalwart, stout, strapping, sturdy, tough; hale, healthy, sound; capable, competent

Near Antonyms delicate, effete, enervated, faint, feeble, frail, infirm, 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 lethargic, listless, sluggish, torpid

2 able to withstand hardship, strain, or exposure <vigorous and sturdy little sheep bred to live in mountainous regions> — see hardy 1
3 marked by or uttered with forcefulness <offered a vigorous dissent> — see emphatic 1
4 not showing weakness or uncertainty <gave the bottle of sauce a vigorous shaking> — see firm 1