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1. 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";
   - slang expression, slang term
    
2. A characteristic language of a particular group
   "they don't speak our slang";
   - cant, jargon, lingo, argot, patois, vernacular

1. Use slang or vulgar language
    
2. Fool or hoax
   - gull, dupe, befool [archaic], cod, fool, put on, take in, put one over, put one across
    
3. Abuse with coarse language

Derived forms: slanged, slanging, slangs

Type of: abuse, betray, blackguard, clapperclaw [archaic], deceive, lead astray, non-standard speech, shout, speak, talk

Encyclopedia: Slang