1. (adj)deficient, lacking(p), wanting(p) inadequate in amount or degree "a deficient education"; "deficient in common sense"; "lacking in stamina"; "tested and found wanting"
2. (adj)insufficient, deficient of a quantity not able to fulfill a need or requirement "insufficient funds"
3. (adj)deficient, inferior, substandard falling short of some prescribed norm "substandard housing"
Definition of 'deficient'
