turn in one's grave

The idiom "turn in one's grave" refers to the concept of a deceased person being so shocked, appalled, or angered by something happening in the present that they would figuratively turn in their grave. The phrase is used to convey the idea that the deceased person would strongly disapprove of the current situation or action, suggesting that it goes against their beliefs, principles, or values.

One fact about the idiom is that it is considered a metaphorical expression. It does not literally imply that a corpse has the ability to physically turn in a grave. Instead, it is a figurative way of suggesting that the deceased person would strongly react to the current situation if they were alive.

A common belief related to the idiom is that it originates from the idea that the deceased person's burial location should be chosen carefully to prevent them from having any disturbances after death. This belief suggests that if someone were to act in a way that would contradict the deceased person's beliefs, they would metaphorically turn in their grave due to the disturbance to their eternal rest.

Several notable writers have used the idiom in their works, contributing to its popularization. For example, Charles Dickens included the phrase "They would turn in their graves if they could see it" in his novel "Barnaby Rudge," published in 1841. This demonstrates that the idiom was in use and understood at the time.

Another idiom related to the concept of turning in one's grave is "dig one's own grave." This phrase is used to convey the idea that someone is taking actions that will ultimately lead to their own downfall or harm. It suggests that the person is making choices or decisions that are detrimental to their own well-being.