noun

1. A variety of a language that is characteristic of a particular area, community or social group, differing from other varieties of the same language in relatively minor ways as regards grammar, phonology, and lexicon.

2. Language that is perceived as substandard or wrong.

3. A language existing only in an oral or non-standardized form, especially a language spoken in a developing country or an isolated region.

Synonyms: patois, vernacular, vernacular