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.
Of higher or the highest quality; splendid.
Having excelled, having surpassed.
Superior in kind or degree, irrespective of moral quality.
Exceptionally good of its kind.