Nouns

(n)slang, slang expression, slang terminformal 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”
(n)slang, cant, jargon, lingo, argot, patois, vernaculara characteristic language of a particular group (as among thieves)“they don't speak our lingo”

Verbs

(v)slanguse slang or vulgar language
(v)gull, dupe, slang, befool, cod, fool, put on, take in, put one over, put one acrossfool or hoax“The immigrant was duped because he trusted everyone”, “You can't fool me!”
(v)slangabuse with coarse language