Languages attested from the 18th century

Polynesian language

set of varieties of the English language native to Australia

thumb | right | Adamantios Korais, the conceiver of Katharevousa

Russenorsk (; , ; English: Russo-Norwegian) is an extinct dual-source "restricted pidgin" language formerly used in the Arctic, which combined elements of Russian and Norwegian. Russenorsk originated from Russian traders from Kola (north-western Russia) and Norwegian fishermen from Tromsø (northern Norway). It was used extensively in Northern Norway for about 150 years in the Pomor trade. Russenorsk is important as a test case for theories concerning pidgin languages since it was used far away from most of the other documented pidgins of the world.

Oïl language spoken in Burgundy and particularly in the Morvan area of the region

dialect and set of English dialects native to South Africans

Tabarchino or Tabarkino () is a dialect of the Ligurian language spoken in Sardinia.

Yurumanguí language

village sign language used in Massachusetts

Dutch-based creole language

extinct language spoken in Baja California

macrodialect of English varieties of the North American continent

Balachka (; ) is the traditional language of the Kuban Cossacks. It is spoken in the Kuban region of southern Russia, particularly in present-day Krasnodar Krai. It developed among the Black Sea Cossacks who were resettled to the region in the late 18th century from territories of the former Zaporizhian Sich.

Romance language

extinct Portuguese-based creole of Jakarta

variety of Irish once spoken in Newfoundland, Canada

attested sign language

extinct Russian-English pidgin language

language

several accents and dialects of Atlantic Canadian English

Judeo-Urdu (; ) was a dialect of the Urdu language spoken by the Baghdadi Jews in the Indian subcontinent living in the areas of Mumbai and Kolkata towards the end of the 18th century. It is a dialect that was written in the Hebrew script and found to be used for several pieces of literature, such as Inder Sabha, a copy of which is kept at the British Library.