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 person who has not paid their debts.
A royalist in the First English Civil War (1642-1646).
One who disobeys or breaks rules or laws, or who acts against another's wishes.
Failing in or neglectful of a duty or obligation; guilty of a misdeed or offense
Late or failing to pay a debt or other financial obligation, like a mortgage or loan.