Hyperthermic is a term used to describe a body temperature that is abnormally high. Other synonyms for hyperthermic include feverish, overheated, fevered, thermic, and hot. These terms all describe a state in which the body's natural cooling system is overwhelmed and unable to effectively regulate its temperature. This can occur as a result of various conditions such as infections, inflammation, or prolonged exposure to heat. It is important to monitor and manage hyperthermia, as high body temperatures can lead to serious health complications such as dehydration, organ damage, and even death.