slang, slang expression, slang term (noun)

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, cant, jargon, lingo, argot, patois, vernacular (verb)

a characteristic language of a particular group (as among thieves)

"they don't speak our lingo"

slang (verb)

use slang or vulgar language

gull, dupe, slang, befool, cod, fool, put on, take in, put one over, put one across (verb)

fool or hoax

"The immigrant was duped because he trusted everyone"; "You can't fool me!"

slang (verb)

abuse with coarse language