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Dictionary definition for: Deficient
1. (s) inadequate in amount or degree; "a deficient education" "deficient in common sense" "lacking in stamina" "tested and found wanting"
2. (a) of a quantity not able to fulfill a need or requirement; "insufficient funds"
3. (s) falling short of some prescribed norm; "substandard housing"
WordNet 2.1 Copyright Princeton University. All rights reserved.