A person who is deficient.
Insufficient or inadequate in amount.
Lacking something essential; often construed with in.
Of a number n, Having the sum of divisors σ(n)<2n, or, equivalently, the sum of proper divisors (or aliquot sum) s(n).
More than sufficiently.
Used as an intensifier, very.
much, enough
many
A more-than-adequate amount.
More than enough.