1. [Adjective]: of a quantity not able to fulfill a need or requirement; "insufficient funds"

2. inadequate in amount or degree; "a deficient education"; "deficient in common sense"; "lacking in stamina"; "tested and found wanting"

3. falling short of some prescribed norm; "substandard housing"

Similar words to 'deficient'

1. inadequate

2. nonstandard

3. depleted

4. low

5. inadequate

6. poor

7. short

8. lean

9. lean

10. skimpy

11. light

12. scant(p)

13. short

14. scarce

15. shy(p)

16. too_little

Opposite words to 'deficient'

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