badass badass /ˈbædˌæs/

adjective

1. [ N. American, Vulgar] Annoyed and irritable  ( bad-tempered , crabbed , crabby , cross , grouchy [Informal] , grumpy , ill-tempered , arsey [Informal, British] , badass [ N. American, Vulgar] , fussy )
   annoyed and irritable
    His bad-tempered reaction caught his wife by surprise
   His bad-tempered reaction caught his wife by surprise
    The crabby little girls of today are the crabby old women of tomorrow!
   The crabby little girls of today are the crabby old women of tomorrow!
    Judy's day was off to a grouchy start
   Judy's day was off to a grouchy start
   
2. [ N. American, Vulgar] Characteristic of an enemy or one eager to fight  ( aggressive , badass [ N. American, Vulgar] , chippy [Informal, N. American] , belligerent )
   characteristic of an enemy or one eager to fight
    Aggressive acts against another country
   aggressive acts against another country
    A belligerent tone
   a belligerent tone
   
3. [ N. American, Vulgar] Being impressive due to extreme attitude or style  ( badass [ N. American, Vulgar] )
   being impressive due to extreme attitude or style
   
4. [ N. American, Vulgar] Brilliant; very good  ( amazeballs [Informal] , awesomesauce [Informal] , badass [ N. American, Vulgar] , cushty [Informal, British] , def [Slang] , legit [American, Slang] , nang [British, Slang] , phat [Slang] , shit-hot [Vulgar] , smokin' [Slang] , socko [Informal, N. American] , stonking [Informal, British] , storming [Informal, British] )
   brilliant; very good
    A blinding good read
   a blinding good read
    A stonking good read
   a stonking good read
    A storming good read
   a storming good read
   

noun

1. [ N. American, Vulgar] A person considered impressive due to extreme attitudes, behavior or appearance  ( badass [ N. American, Vulgar] )
   A person considered impressive due to extreme attitudes, behavior or appearance
   
2. [ N. American, Vulgar] A mean or belligerent person  ( badass [ N. American, Vulgar] )
   A mean or belligerent person
   
3. [ N. American, Vulgar] Someone who is aggressive, belligerent or bad-tempered  ( badass [ N. American, Vulgar] )
   someone who is aggressive, belligerent or bad-tempered