Lacking something essential; often construed with in.
Insufficient or inadequate in amount.
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 is deficient.
Of little or no importance, frivolous.
To behave in a frivolous way.
To waste or fritter.
To totter.
A trifler.
A trifling action.
A frivolous, contemptible fellow; a fop.