slang

Noun

• a characteristic language of a particular group (as among thieves)
  • they don't speak our lingo
    

• informal language consisting of words and expressions that are not considered appropriate for formal occasions; often vituperative or vulgar
  • their speech was full of slang expressions
    

Verb

• abuse with coarse language

• fool or hoax
  • The immigrant was duped because he trusted everyone
    
  • You can't fool me!
    

• use slang or vulgar language

Related words

• Synonyms: 
  cant , jargon , lingo , argot , patois , vernacular , slang expression , slang term