patois

A regional dialect, especially one without a literary tradition.

Nonstandard speech.

The special jargon of a group; cant.

A dialect peculiar to a district or locality, in use especially among the peasantry or uneducated classes; hence, a rustic, provincial, or barbarous form of speech.

A dialect peculiar to the illiterate classes; a provincial form of speech.

A regional dialect of a language (especially French); usually considered substandard.

Any of various French or Occitan dialects spoken in France.

Creole French in the Caribbean (especially in Dominica, St. Lucia, Trinidad and Tobago& Haiti).

A Jamaican Creole language primarily based on English and African languages but also has influences from Spanish, Portuguese and Hindi.