non-standard speech

speech communication, spoken communication, spoken language, voice communication, oral communication, speech, language - (language) communication by word of mouth; "his speech was garbled"; "he uttered harsh language"; "he recorded the spoken language of the streets"

baby talk, babytalk - the developing speech of a young child

baby talk, babytalk, motherese - an adult's imitation of the speech of a young child

dialect, idiom, accent - the usage or vocabulary that is characteristic of a specific group of people; "the immigrants spoke an odd dialect of English"; "he has a strong German accent"; "it has been said that a language is a dialect with an army and navy"

localism - a phrase or pronunciation that is peculiar to a particular locality

regionalism - a feature (as a pronunciation or expression or custom) that is characteristic of a particular region

telegraphese - language characterized by terseness and ellipsis as in telegrams

vernacular - the everyday speech of the people (as distinguished from literary language)

jargon, lingo, patois, argot, vernacular, slang, cant - a characteristic language of a particular group (as among thieves); "they don't speak our lingo"

slang, slang expression, slang term - 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"