stone dead

beat a dead horse

To persist or continue far beyond any purpose, interest or reason.

Brown bread

[Cockney slang]dead

carved in stone

Unchangeable.

cast the first stone

To act self-righteously in accusing another person, believing oneself to be blameless.

come back from the dead

To experience a resurgence after one's productive years are assumed to have ended.

dead 'n' buried

Contraction of dead and buried.

dead air

An unintended interruption in a broadcast during which nothing is transmitted: a silent period on radio or a silent period with no picture on television.

dead and buried

Of an issue, moot, passed, irrelevant, forgotten.