Language that is perceived as substandard or wrong
A language existing only in an oral or non-standardized form, especially a language spoken in a developing country or an isolated region
A lect as part of a group or family of languages, especially if they are viewed as a single language, or if contrasted with a standardizedidiom that is considered the 'trueform of the language (for example, Cantonese as contrasted with MandarinChinese, or Bavarian as contrasted with Standard German