De·fi·cient a. Wanting, to make up completeness; wanting, as regards a requirement; not sufficient; inadequate; defective; imperfect; incomplete; lacking; as, deficient parts; deficient estate; deficient strength; deficient in judgment.
The style was indeed deficient in ease and variety. --Macaulay.
Deficient number. Arith. See under Abundant.
-- De*fi*cient-ly, adv.
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