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 physical or mental malfunction.
Absence of order; state of not being arranged in an orderly manner.
A disturbance of civic peace or of public order.
To throw into a state of disorder.
To knock out of order or sequence.