superannuate

To superannuate is to retire someone or declare them too old for work or use.

The word comes from Latin roots meaning "beyond a year"—specifically, past the year of usefulness.

A superannuated professor has been pensioned off; superannuated equipment is outdated and retired from service.

The adjective superannuated often carries a dismissive edge: superannuated ideas, a superannuated bureaucrat clinging to his post.

In British usage, superannuation refers to pension contributions or the pension itself.