weak

1 lacking bodily strength the little boy was simply too weak to lift the box Synonyms asthenic, debilitated, delicate, down-and-out, effete, enervated, enfeebled, faint, feeble, frail, infirm, languid, low, prostrate, prostrated, sapped, slight, soft, softened, tender, unsubstantial, wasted, weakened, wimpish, wimpy Related Words challenged, disabled, incapacitated, invalid; paralyzed; broken-down, decrepit; impotent, powerless; breakable, flimsy, fragile; dizzy, groggy, rocky, unsteady, woozy; drained, exhausted, flagging, tired, weary, worn-out; damaged, harmed, hurt, impaired, injured, lame, unsound; resistless, susceptible, unresistant, vulnerable, yielding Near Antonyms able-bodied, athletic, beefy, brawny, fit, husky, muscular, sinewy, strapping, virile; hard, hardy, lusty, red-blooded, robust, sturdy, tough; fortified, hardened, inured, strengthened, toughened; energetic, energized, invigorated, vigorous, vitalized; hale, healthy, sound; capable, competent; convalescing, recovering, recuperating Antonyms mighty, powerful, rugged, stalwart, stout, strong

2 lacking strength of will or character the opinion that overweight people are just weak individuals who easily give in to temptation Synonyms characterless, effete, frail, invertebrate, limp-wristed, milk-and-water, namby-pamby, nerveless, soft, spineless, weakened, weak-kneed, weakling, wet [British], wimpish, wimpy, wishy-washy Related Words flabby, flaccid, forceless, ineffective, ineffectual; impotent, impuissant, powerless; emasculated, unnerved; lamblike, meek, pliable, submissive; corrupt, dastardly, unprincipled, unscrupulous, villainous; cowardly, craven, fainthearted, lily-livered, nebbishy, poltroon, pusillanimous, sissy, timid; infirm, irresolute, vacillating Near Antonyms ethical, good, moral, principled, right, righteous, upright, virtuous; determined, mettlesome, resolute, unrelenting; courageous, stalwart, stouthearted Antonyms backboned, firm, hard, strong, tough

3 not containing very much of some important element the coffee came out too weak because I didn't use enough ground beans Synonyms dilute, diluted, thin, thinned, washy, watery, weakened Related Words adulterated, watered-down Near Antonyms enriched, fortified; concentrated, condensed, evaporated Antonyms full-bodied, rich, strong

4 not using or following good reasoning your argument is weak Synonyms fallacious, illegitimate, inconsequent, inconsequential, invalid, irrational, nonrational, unreasonable, unreasoning, unsound, illogicalRelated Words eristic (also eristical), misleading, sophistic (or sophistical), specious; half-baked, ill-advised, misguided, unconsidered, unreasoned; inconsistent; absurd, asinine, foolish, meaningless, nonsensical, preposterous, reasonless, senseless, silly; Kafkaesque, odd, peculiar, strange, surreal, unusual, weird; insane, mad, nutty, wacky (also whacky); disordered, disorganized, rambling, random; unconvincing; inexplicable, unaccountable, unexplainableNear Antonyms commonsense, sane, sensible, sober, wise; enlightened, informed, just, justified, reasoned; ordered, organized; clear, cogent, compelling, convincing, credible, persuasive, plausible, satisfying, solid; certain, sure, true; confirmed, corroborated, demonstrated, established, substantiated, validatedAntonyms logical, rational, reasonable, sound, valid, well-founded, well-grounded

5 unable to act or achieve one's purpose the vice president is a relatively weak official Synonyms hamstrung, handcuffed, helpless, high and dry, hog-tied, impotent, impuissant, paralyzed, powerlessRelated Words incapable, incompetent, ineffective, ineffectual, inept, unfit, useless; feeble, frail, infirm, passive, spineless, supine, unaggressiveNear Antonyms able, capable, competent, effective, efficient; authoritarian, autocratic (also autocratical), despotic, dictatorial, magisterial, tyrannical (also tyrannic); dominant, dynamic, energetic, forceful, robust, sturdy, tough, vigorous; important, major, significant; high-level, senior, topAntonyms mighty, potent, powerful, puissant, strong