1

deficient

adjective de·fi·cient \ di-ˈfi-shənt \

Definition of deficient

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 1complement 1b) :defective
  • deficient strength
  • … rusted and aging pipes … abetted by deficient maintenance and sabotage.
  • —Adam Nossiter

deficiently

adverb

Examples of deficient in a Sentence

  1. Several bridges in the city are structurally deficient.

  2. a diet deficient in calcium can lead to weak bones

Recent Examples of deficient from the Web

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.

Origin and Etymology of deficient

Latin deficient-, deficiens, present participle of deficere to be wanting — more at defect


2

deficient

noun

Definition of deficient

:a person or thing that is deficient
  • a mental deficient

Recent Examples of deficient from the Web

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.

Origin and Etymology of deficient


DEFICIENT Defined for English Language Learners

deficient

adjective

Definition of deficient for English Language Learners

  • : not having enough of something that is important or necessary

  • : not good enough : not as good as others


DEFICIENT Defined for Kids

deficient

adjective de·fi·cient \ di-ˈfi-shənt \

Definition of deficient for Students

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

Medical Dictionary

1

deficient

adjective de·fi·cient \ di-ˈfish-ənt \

medical Definition of deficient

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

2

deficient

noun

medical Definition of deficient

:one that is deficient
  • a mental deficient


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