Adjective

• S: (adj) deficient, lacking, wanting (inadequate in amount or degree) "a deficient education"; "deficient in common sense"; "lacking in stamina"; "tested and found wanting"
• S: (adj) insufficient, deficient (of a quantity not able to fulfill a need or requirement) "insufficient funds"
• S: (adj) deficient, inferior, substandard (falling short of some prescribed norm) "substandard housing"
• similar to
• derivationally related form
• antonym