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 gullible fool, especially an elderly person with impaired faculties.
A small brown-and-black bird, Charadrius morinellus, of the plover family.
Any of various small birds of Australasia thought to resemble the Eurasian dotterel.
decayed