Meaning & Definition of word "Deficient"

Deficient

/dɪˈfɪʃ.ənt/

adjective:

  • 1. not having enough of a specified quality or ingredient
    • Example: The patient was diagnosed as deficient in vitamin D, requiring supplements.
  • 2. lacking in some necessary quality or element
    • Example: The plan was deficient in clarity, leading to confusion among team members.
  • 3. insufficient in amount or degree; inadequate
    • Example: Her knowledge of the subject was deficient, which affected her performance in the exam.

Etymology

Late Middle English: from Old French 'deficient' or from Latin 'deficient-' meaning 'failing.'

Common Phrases and Expressions

deficient in:

lacking a necessary quality or ingredient.

deficient amount:

an amount that is not sufficient.

deficient performance:

performance that is below expectations.

Related Words

deficiency:

a lack or shortage of something.

deficiently:

in a manner that is lacking in quality or quantity.

deficientness:

the quality of being deficient.

Slang Meanings of deficient

Meaning: Not up to par.

Example Sentence: That presentation was a bit deficient, no offense.

Meaning: Slacking.

Example Sentence: He's been deficient in his work lately.