Not existing; lacking.
Being away from a place; withdrawn from a place; not present; missing.
Inattentive to what is passing; absent-minded; preoccupied.
Something absent, especially absent people collectively; those who were or are not there.
To keep (oneself) away.
Leave.
In the absence of; without; except.
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.