adjective
Definition: Someone who seeks attention in a compulsive way, often by displaying themselves or their actions publicly.
Example: His exhibitionist behavior at the party made everyone uncomfortable.
noun
Definition: A person who shows off or seeks attention, often by behaving in a way that is meant to attract notice, sometimes by revealing private parts of their body in public.
Example: The exhibitionist enjoyed the thrill of being watched by others in the park.