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deficient

Synonyms of deficient in English:

adjective

  • 1 his diet is deficient in vitamin A
    lacking, wanting, defective, inadequate, insufficient, limited, poor, scant;
    short of/on, low on, with an insufficiency of, with too little/few …
    [Antonyms] excessive
  • 2 on all levels, this is deficient leadership
    defective, faulty, flawed, inadequate, imperfect, impaired, shoddy, scrappy, sketchy, weak, inferior, unsound, substandard, second-rate, poor, shabby, incomplete, leaving much to be desired
    informal duff
    [Antonyms] perfect
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