badass
adjective
1. (US, slang) Having extreme appearance, attitude, or behavior that is considered admirable.
- That tough guy looks badass.
noun
1. (US, slang, negative connotation, vulgar) A mean or belligerent person; a person with unpleasantly extreme attitudes, behavior or appearance.
- Don't mess with that guy, he's a real badass.
2. (US, youth slang, positive connotation, vulgar) A person considered impressive due to extreme attitudes, behavior or appearance.