When someone is "out of health", it means that they are not feeling well, or suffering from an illness or injury. There are several synonyms that could be used to describe this state, including "unwell", "sickly", "ailing", "under the weather", "indisposed", "hurt", or "injured". These words can be used in a variety of contexts, from describing a minor cold or headache to a more serious medical condition. It's important to remember that when someone is out of health, they may need sympathy, care, and support to help them recover and get back on their feet.