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 weak and contemptible man.
A womanizer; a young man who sleeps with women without any intention of having a relationship with them.
A prisoner who provides sexual favors to a stronger inmate, either as the result of rape or in return for protection and gifts.