- Not sufficient; not enough; inadequate to any need,
use, or purpose; as, the provisions are insufficient in quantity, and
defective in quality. - Wanting in strength, power, ability, capacity, or
skill; incompetent; incapable; unfit; as, a person insufficient to
discharge the duties of an office.
Meaning of 'insufficient' (Princeton's WordNet)
1 . insufficient
[ a]
Meaning (1): - of a quantity not able to fulfill a need or requirement