Thesaurus

deficient

adjective

Synonyms & Antonyms of deficient

1 lacking some necessary part
  • a diet deficient in calcium can lead to weak bones

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2 falling short of a standard
  • woefully deficient eyesight kept him out of military service

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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

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Time Traveler

The first known use of deficient was in 1581

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deficiency

deficient

deficiently

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Cite this Entry

“Deficient.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/deficient. Accessed 17 Oct. 2021.

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More from Merriam-Webster on deficient

Nglish: Translation of deficient for Spanish Speakers

Britannica English: Translation of deficient for Arabic Speakers

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