1 deficient | Definition of deficient

deficient

adjective
de·​fi·​cient | \ di-ˈfi-shÉ™nt How to pronounce deficient (audio) \

Definition of deficient

 (Entry 1 of 2)

1 : lacking in some necessary quality or element deficient in judgment bones deficient in calcium
2 : not up to a normal standard or complement (see complement entry 1 sense 1b(1)) : defective deficient strength … rusted and aging pipes … abetted by deficient maintenance and sabotage.— Adam Nossiter

deficient

noun

Definition of deficient (Entry 2 of 2)

: a person or thing that is deficient a mental deficient

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Other Words from deficient

Adjective

deficiently adverb

Synonyms & Antonyms for deficient

Synonyms: Adjective

fragmental, fragmentary, half, halfway, incomplete, partial

Antonyms: Adjective

complete, entire, full, intact, integral, perfect, whole

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Examples of deficient in a Sentence

Adjective

Several bridges in the city are structurally deficient. a diet deficient in calcium can lead to weak bones

Recent Examples on the Web: Adjective

Related Articles Cities and counties have identified 920 deficient bridges that should be replaced over the next five years at a cost of $573 million. Bill Salisbury, Twin Cities, "Minnesota wishlist for public works projects grows. Total cost: $5.3 billion," 7 Sep. 2019 Its rankings were better relative to most states for the percentage of bridges that are structurally deficient (13th) and overall fatality rate relative to vehicle miles traveled (23rd). Jon Murray, The Denver Post, "Colorado’s rough highway pavement gets knocked again as state slides 5 spots in national road study," 27 Aug. 2019 If your soil is deficient in magnesium, Epsom salts can provide it, acting like a fertilizer. oregonlive.com, "Can household vinegar kill dandelions? Ask an expert," 17 Aug. 2019 Notable structures like the Brooklyn Bridge and the San Mateo-Hayward Bridge over San Francisco Bay were deemed deficient. Scottie Andrew And Brian Ries, CNN, "A 100-year-old bridge collapsed under a trailer carrying 42 tons of beans," 24 July 2019 Lombardi started the final two games of the regular season, a loss at Nebraska and a home escape over Rutgers, before ceding the job back to Lewerke for the Redbox Bowl and MSU’s offensively deficient 7-6 loss to Oregon. Chris Solari, Detroit Free Press, "Michigan State football: Mark Dantonio says QB Brian Lewerke 'back and healthy'," 18 July 2019 All were fine in terms of vitamin B12; as for taurine, three cats were found deficient. Marta Zaraska, chicagotribune.com, "Be leery about vegetarian diets for your pets," 10 July 2019 The new center replaced the grim and seismically deficient Transbay Terminal nearby. USA TODAY, "Women in baseball, Lynyrd Skynyrd, circus fire: News from around our 50 states," 1 July 2019 Like their nucleus-deficient prokaryotic brethren, eukaryotes are challenging to grow in culture. Carrie Arnold, WIRED, "A Blazing Hot Coal Seam Shows How Microbes Can Spring to Life," 21 Apr. 2019

Recent Examples on the Web: Noun

But rising home prices are bailing out large numbers of the equity deficient: their number is down by more than 1.2 million in the last 12 months. Kenneth R. Harney, miamiherald, "Which U.S. neighborhood has homeowners with the most equity? Answer may surprise you," 22 Aug. 2017

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'deficient.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of deficient

Adjective

1581, in the meaning defined at sense 1

Noun

1906, in the meaning defined above

History and Etymology for deficient

Adjective

borrowed from Latin dēficient-, dēficiens, present participle of dēficere "to leave without enough, let down, be lacking, run short, fail," from dē- de- + facere "to make, bring about, perform, do" — more at fact

Noun

derivative of deficient entry 1

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More Definitions for deficient

deficient

adjective

English Language Learners Definition of deficient

: not having enough of something that is important or necessary
: not good enough : not as good as others

deficient

adjective
de·​fi·​cient | \ di-ˈfi-shÉ™nt How to pronounce deficient (audio) \

Kids Definition of deficient

: lacking something necessary for completeness or health Her diet is deficient in proteins.

deficient

adjective
de·​fi·​cient | \ di-ˈfish-É™nt How to pronounce deficient (audio) \

Medical Definition of deficient

 (Entry 1 of 2)

1 : lacking in some necessary quality or element a deficient diet
2 : not up to a normal standard or complement deficient strength
3 : having, relating to, or characterized by a genetic deletion

deficient

noun

Medical Definition of deficient (Entry 2 of 2)