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).
To increase in wealth or success; to prosper, be profitable.
To grow or increase stature; to grow vigorously or luxuriantly, to flourish.