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"
exhibiting lack of respect; rude and discourteous; "remarks disrespectful of the law"; "disrespectful in the presence of his parents"; "disrespectful toward his teacher"