Monster is a term that can refer to:
1. A large, ugly, and frightening imaginary creature
2. A cruel or wicked person
3. Something that is extremely large or powerful
4. In slang, something extraordinarily good or impressive
5. A person with exceptional abilities or qualities
Common phrases:
- "Green-eyed monster" = jealousy
- "Monster mash" = a dance or party
- "Monster energy drink" = a popular energy drink brand