Deficient Definition

dĭ-fĭshənt
adjective
Lacking in some essential; incomplete; defective.
Webster's New World
Inadequate in amount, quality, or degree; not sufficient.
Webster's New World

Lacking something essential; often construed with in.

Wiktionary
noun
A deficient person or thing.
Webster's New World

Origin of Deficient

  • Latin dēficiēns dēficient- present participle of dēficere to fail, be wanting defect

    From American Heritage Dictionary of the English Language, 5th Edition

  • From Latin deficiens, present participle of deficere (“to lack, fail, be wanting”); see defect.

    From Wiktionary

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