Maniac

Pronunciation: /ˈmeɪniːˌæk/

Maniac (noun)

  1. A person who is extremely excited or interested in something, often in an uncontrolled way.
  2. A person with a serious mental condition that can cause very unusual behaviour and strong mood changes.
  3. A person seen as dangerously out of control, especially when they harm others.

Examples

  • The maniac shouted with joy during the concert.
  • A maniac can cheer loudly when the game starts.