weakened

1 containing foreign or lower-grade substances the pharmacist, motivated by pure greed, would pass off the weakened drugs to unsuspecting customers, some of whom had life-threatening illnesses Synonyms adulterate, adulterated, alloyed, contaminated, dilute, diluted, polluted, tainted, thinned, impureRelated Words unclarified, unfiltered, unrefined; befouled, begrimed, bemired, besmirched, corrupted, debased, defiled, dirtied, fouled, maculate (or maculated), soiled, spoiled, sullied; blended, commingled, incorporated, intermingled, intermixed, merged, mingled, mixed; coalesced, combined, compounded; cheapened, doctoredNear Antonyms clarified, filtered, purified, refined, ultrarefined; neat, plain, straight; concentrated, strong; uncombined; pasteurized; sterile, sterilized; clean, immaculate, spotless, stainless, unsoiled, unsulliedAntonyms fine, pure, ultrapure, unadulterated, unalloyed, uncontaminated, uncut, undiluted, unmixed, unpolluted, untainted

2 lacking bodily strength left weakened by a prolonged illness 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, weak, wimpish, wimpyRelated 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, yieldingNear 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, recuperatingAntonyms mighty, powerful, rugged, stalwart, stout, strong

3 lacking strength of will or character the nation's people, weakened by years of tyranny, tended to automatically obey anyone with an authoritative manner Synonyms characterless, effete, frail, invertebrate, limp-wristed, milk-and-water, namby-pamby, nerveless, soft, spineless, weak, weak-kneed, weakling, wet [British], wimpish, wimpy, wishy-washyRelated 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, vacillatingNear Antonyms ethical, good, moral, principled, right, righteous, upright, virtuous; determined, mettlesome, resolute, unrelenting; courageous, stalwart, stoutheartedAntonyms backboned, firm, hard, strong, tough

4 not containing very much of some important element some experts recommend that runners drink a weakened mixture of juice and water Synonyms dilute, diluted, thin, thinned, washy, watery, weakRelated Words adulterated, watered-downNear Antonyms enriched, fortified; concentrated, condensed, evaporatedAntonyms full-bodied, rich, strong