overheated

(verb) get excessively and undesirably hot. Synonyms: overheat. Example: "The car engines overheated."

(verb) make excessively or undesirably hot. Synonyms: overheat. Example: "The room was overheated."

(adj) heated beyond a safe or desirable point. Examples: "The child became overheated." "Overheated metal."