turn in one's grave

(redirected from turn over in one's grave)

turn (over) in (one's) grave

To (hypothetically) show enormous anger, disfavor, or regret for someone's actions or something that happens after one has died. That is, if someone were still alive, they would be greatly upset, angered, or disgusted by what has happened. I can't believe you're using our employees' pension payments to prop up a Ponzi scheme. The founder of this once-great company would be turning in his grave to see its directors stoop so low. Your poor mother would turn over in her grave if she heard the horrible things you were saying about your sister.
See also: grave, turn

turn in one's grave

Also turn over in one's grave. Be very upset. This idiom is used only of a dead person, who in all likelihood would have been upset by developments in question, as in If she knew you'd sold her jewelry, she'd turn over in her grave. [Late 1800s]
See also: grave, turn