The Insular Celtic language hypothesis groups the Goidelic languages, which include Irish, Scottish Gaelic and the recently extinct Manx, together with the Brythonic languages, of which the modern ones are Welsh, Breton, and the moribund Cornish. Proto-Indo-European Indo-European studies Celtic languages are a branch of the Indo-European languages. ... Goidelic is one of two major divisions of modern-day Celtic languages (the other being Brythonic). ... Note: This page contains IPA phonetic symbols in Unicode. ... Note: This page contains phonetic information presented in the International Phonetic Alphabet (IPA) using Unicode. ... Manx (Gaelg or Gailck), also known as Manx Gaelic, is a Goidelic language spoken on the Isle of Man. ... Brythonic is one of two major divisions of Insular Celtic languages (the other being Goidelic). ... Welsh redirects here, and this article describes the Welsh language. ... This page is about the Breton language. ... The Cornish language (in Cornish: Kernowek, Kernewek, Curnoack) is one of the Brythonic group of Celtic languages that includes Welsh, Breton, the extinct Cumbric and perhaps the hypothetical Ivernic. ...

The nomenclature "Insular" refers to the location of the areas where these languages have been traditionally spoken, that being the British Isles (Latin insula - "island"). It therefore also refers to the notion that the Brythonic and Goidelic languages evolved together in those islands, having a common ancestor more recent than any shared with the Continental Celtic languages (Celtiberian, Gaulish and Lepontic among others, all of which are long extinct). Nomenclature is a system of naming and categorizing objects in a given category. ... British Isles is also an old name for the Great Britain, Great Britain Ireland The Isle of Man The Isle of Wight The Northern Isles, including Orkney, Shetland and Fair Isle The Hebrides, including the Inner Hebrides, Outer Hebrides and Small Isles Rockall The islands of the lower Firth of... Latin was the language originally spoken in the region around Rome called Latium. ... Historical linguistics (also diachronic linguistics or comparative linguistics) is primarily the study of the ways in which languages change over time, by means of examining languages which are recognizably related through similarities such as vocabulary, word formation, and syntax, as well as the surviving records of ancient languages. ... Missing link is a term for a transitional form from the fossil record that connects an earlier species to a later one, or which connects two different species to an earlier ancestor. ... The Celtiberians dwelt in the Iberian Peninsula and spoke a Celtic language. ... Gaulish is name given to the now-extinct Celtic language that was spoken in Gaul before the Romans, the Franks and the British Celts invaded. ... Lepontic is an extinct Celtic language that was once spoken in Northern Italy between 700 BCE and 400 BCE. The language is only known from a few inscriptions discovered that were written in a variety of the Northern Italic alphabet, which was related to the Old Italic alphabet. ... In biology and ecology, extinction is the ceasing of existence of a species or group of species. ...

The proponents of the Insular Celtic hypothesis point to shared innovations among Insular Celtic languages, including inflected prepositions and VSO word order. They assert that an etymological partition that lumps the Brythonic languages and Gaulish (all P-Celtic) on one side and the Goidelic languages with Celtiberian (all Q-Celtic) on the other may be a superficial one, as the identical sound shift (Q to P) could have occurred at least twice, once as Celts crossed into the Iberian peninsula and at a different instance in Britain, in the predecessors of Celtiberian and Brythonic, respectively. A hypothesis (= assumption in ancient Greek) is a proposed explanation for a phenomenon. ... This article is about inflection in linguistics. ... Verb Subject Object—commonly used in its abbreviated form VSO—is a term in linguistic typology. ... Etymology is the study of the origins of words. ... In general, a partition is a splitting into parts. ... Superficial is a general term meaning regarding the surface, often metaphorically. ... topographic map of the Iberian Peninsula The Iberian Peninsula, or Iberia, is located in the extreme southwest of Europe. ...