- 1(old-fashioned or formal) an animal, especially one that is large or dangerous, or one that is unusual wild/savage/ferocious beasts mythical beasts such as unicorns and dragons
- 2a person who is cruel and whose behavior is uncontrolled synonym animal
- 3(informal) (often humorous) an unpleasant person or thing The math exam was a real beast.
- 4(informal) a thing of a particular kind synonym animal His new guitar is a very expensive beast.
Check pronunciation: beast