Word Type

Adjective

Adjective

Noun

The word "deficient" can be used as adjective, adjective and noun.

Word Relationships

Derived Terms

bideficient biodeficient deficient number deficient-demand unemployment deficiently deficientness demand-deficient unemployment haplodeficient hyperdeficient immunodeficient indeficient mental deficient multideficient nondeficient phosphodeficient pseudodeficient rank-deficient self-deficient undeficient

Context

mathematics

Related Terms

defect defection defective defector deficiency deficit

Related Terms

amount defect defection defective defector deficiency deficit essential in inadequate insufficient lack

Similar Terms

depleted inadequate inadequate jejune lean light low meager meagerly meagre nonstandard poor scant scrimpy short shy skimpy stingy unequal

Synonym Network

insufficient substandard

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.