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).
A condition of severe suffering due to a lack of nutrition.
A state where a process is perpetually denied necessary resources to process its work.
Severe shortage of resources.