P-Celtic (uncountable) The group of Celtic languages (including Welsh, Cornish and Breton) which show /p/ as a reflex of Proto-Indo-European *kʷ.

What is Q Celtic and P Celtic?

P-Celtic refers to the Brythonic/Brittonic languages, and Q-Celtic refers to the Goidelic/Gaelic languages. The modern Goidelic languages include Irish (Gaeilge) and Scottish Gaelic (Gàidhlig), the former spoken in Ireland and the latter in Scotland.

What language is Gaelic closest to?

Among the modern languages, there is often a closer match between Welsh, Breton, and Cornish on the one hand, and Irish, Scottish Gaelic and Manx on the other. For a fuller list of comparisons, see the Swadesh list for Celtic.