Definition & Meaning of "like death warmed over"in English

What is the origin of the idiom "like death warmed over" and when to use it?

The idiom "like death warmed over" originated as a vivid and exaggerated way to describe someone who appears extremely sick, pale, or unwell. It is a figurative expression that suggests a person's appearance is reminiscent of someone who has recently returned from the state of death. It is used to emphasize a person's extremely unwell or unhealthy appearance. It suggests that the person looks very pale, thin, or exhausted, as if they have been through a tough time.