Languages attested from the 17th century

Northwest Caucasian language native to northwestern Georgia

set of dialects of the English language spoken in the United States

stage of the English language from the contemporary period

pidgin spoken in Iceland in the 17th century

Palenquero (sometimes spelled Palenkero) or Palenque () is a Spanish-based creole language spoken in Colombia. It is believed to be a mixture of Kikongo (a language spoken in present-day Central African countries of the Angola, Gabon, the Democratic Republic of the Congo, the Republic of the Congo) and Spanish. However, there is not sufficient evidence to indicate that Palenquero is strictly the result of a two-language contact. It could also have absorbed elements of local indigenous languages.

Negerhollands ('Negro-Dutch', also known by the contemporary and more neutral name Virgin Islands Creole Dutch) was a Dutch-based creole language that was spoken in the Danish West Indies, now known as the U.S. Virgin Islands. Dutch was its superstrate language with Danish, English, French, Spanish, and African elements incorporated. Notwithstanding its name, Negerhollands drew primarily from the Zeelandic and probably also from the closely related West Flemish, rather than the Hollandic, dialects of Dutch.

Fingallian or the Fingal dialect is an extinct dialect of Middle English formerly spoken in Fingal, Ireland. It is thought to have been an offshoot of Middle English, which was brought to Ireland during the Norman invasion, Although little is known of Fingallian, it is thought to have been similar to the Yola dialect of County Wexford.

extinct Mongolic literary language

extinct Formosan language

Dutch dialect spoken in New Jersey

stage of the Japanese language following Middle Japanese and preceding Modern Japanese

native language of southern Brazil

dialect of West Frisian spoken in Hindeloopen and Molkwerum

pidgin language that developed between speakers of Unami Delaware and Dutch traders and settlers on the Delaware River in the 1620s

Norman dialect