Thesaurus

deficient

adjective

Synonyms and Antonyms of deficient

  1. 1 lacking some necessary part a diet deficient in calcium can lead to weak bones Synonyms of deficient incomplete, fragmental, fragmentary, half, halfway, partialWords Related to deficient broken, damaged, flawed, impaired, imperfect, injured, marred, spoiled; sketchy, unassembled, uncompleted, unfinishedNear Antonyms of deficient flawless, unbroken, undamaged, unimpaired, uninjured, unmarred; completed, finishedAntonyms of deficient complete, entire, full, intact, integral, perfect, whole

  2. 2 falling short of a standard woefully deficient eyesight kept him out of military service Synonyms of deficient bastard, bush, bush-league, crummy (also crumby), bad, dissatisfactory, ill, inferior, lame, lousy, off, paltry, poor, punk, sour, suboptimal, subpar, substandard, unacceptable, unsatisfactory, wack [slang], wanting, wretched, wrongWords Related to deficient abysmal, atrocious, awful, bitchin' [slang], brutal, damnable, deplorable, detestable, disastrous, dreadful, execrable, gnarly [slang], horrendous, horrible, pathetic, stinky, sucky [slang], terrible, unspeakable; defective, faulty, flawed; egregious, flagrant, gross; bum, cheesy, coarse, common, crappy [slang], cut-rate, junky, lesser, low-grade, low-rent, mediocre, miserable, reprehensible, rotten, rubbishy, second-rate, shoddy, sleazy, trashy; abominable, odious, vile; useless, valueless, worthless; inadequate, insufficient, lacking, meager (or meagre), mean, miserly, niggardly, scanty, shabby, short, skimp, skimpy, spare, stingy; miscreant, scurrilous, villainous; counterfeit, fake, phony (also phoney), shamNear Antonyms of deficient classic, classical; A1, bang-up, banner, boss [slang], capital, choice, crackerjack, dandy, divine, excellent, exceptional, fabulous, fine, first-class, first-rate, grand, great, groovy, heavenly, high-test, jim-dandy, keen, marvelous (or marvellous), mean, neat, nifty, noble, par excellence, perfect, premium, prime, sensational, slick, splendid, stellar, sterling, superb, superior, superlative, supernal, swell, terrific, tip-top, top, top-notch, unsurpassed, wonderful; better, exceptional, fancy, high-grade, special, sufficient; average, borderline, fair, mediocre, middling, minimal, so-so, unexceptional; suitable, useful, worthy; gratifying, satisfyingAntonyms of deficient acceptable, adequate, all right, decent, fine, OK (or okay), passable, respectable, satisfactory, standard, tolerable

  3. 3 not coming up to an expected measure or meeting a particular need too deficient in common sense to be trusted to stay by himself Synonyms of deficient short, inadequate, insufficient, lacking, low, scarce, shy, wantingWords Related to deficient substandard, unacceptable, unsatisfactory; hand-to-mouth, lean, light, meager (or meagre), niggardly, poor, scant, scanty, skimp, skimpy, slender, slim, spare, sparse, stingy; bare, mere, minimum; slight, smallNear Antonyms of deficient abundant, ample, bounteous, bountiful, copious, generous, liberal, plenteous, plentiful, plentitudinous; enlarged, expanded, supplemented; abounding, overflowing, teeming; satisfactory, tolerable; lavish, luxuriant, rich; big, considerable, hefty, jumbo, king-size (or king-sized), large, largish, oversize (or oversized), sizable (or sizeable), substantial, superAntonyms of deficient adequate, enough, sufficient



Seen and Heard

What made you want to look up deficient? Please tell us where you read or heard it (including the quote, if possible).

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

WORD OF THE DAY

marked by intense feeling

Get Word of the Day daily email!

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!