filthy

Adjective

• characterized by obscenity
  • had a filthy mouth
    
  • foul language
    
  • smutty jokes
    

• vile; despicable
  • a dirty (or lousy) trick
    
  • a filthy traitor
    

• disgustingly dirty; filled or smeared with offensive matter
  • as filthy as a pigsty
    
  • a foul pond
    
  • a nasty pigsty of a room
    

Related words

• Synonyms: 
  cruddy , foul , nasty , smutty , dirty , lousy