Lacking something essential; often construed with in.
Insufficient or inadequate in amount.
Of a number n, Having the sum of divisors σ(n)<2n, or, equivalently, the sum of proper divisors (or aliquot sum) s(n).
A person who is deficient.
Possessing adequate talents or accomplishments; of competent power or ability; qualified; fit.
Of a type or kind that suffices, that satisfies requirements or needs.
A quantity (of something) that is as large as is needed.
An adequate quantity of; enough.