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).
An effeminate person.
To become womanly.
Exhibiting behaviour or mannerisms considered typical of a female; unmasculine.