Having an older age.

plural of age distribution

(intransitive) To become too old for an activity, program or institution; to become too mature for a behavior. / (euphemistic, politics) To die or retire.

Alternative form of unaged

(archaeology) A short or theoretical prehistoric period between the Neolithic and Bronze Age.

Alternative letter-case form of silver age

present participle of age out

(formal, idiomatic) For all time, forever.

A pension paid to people by the state, when they reach a predefined age, to compensate for loss of earnings

To behave in a manner appropriate to one's age. / (imperative, originally US) To behave in a mature manner; to avoid being childish.