Dead eyes is a term used to describe the appearance of a person's eyes when they lack emotion or expression, giving the impression of being lifeless or empty. There are several synonyms that can be used to describe this characteristic, including vacant eyes, blank stare, lifeless gaze, empty look, inert eyes, soulless eyes, and dull eyes. These terms are often used to indicate a lack of energy or enthusiasm in a person's demeanor, and can be commonly observed in those who are grieving, depressed, or experiencing emotional numbness. Whatever the reason for dead eyes, it is a recognizable and evocative term that conveys bleakness and disconnection.