Irish languageIrish (Standard Irish: Gaeilge), also known as Gaelic 'geilIk, is a Goidelic language of the Insular Celtic branch of the Celtic language family, which is a part of the Indo-European language family. Irish is indigenous to the island of Ireland and was the population's first language until the 19th century, when English gradually became dominant, particularly in the last decades of the century. Today, Irish is still commonly spoken as a first language in areas of Ireland collectively known as the Gaeltacht, in which only 2% of Ireland's population lived in 2016.
Manx languageManx (Gaelg or Gailck, pronounced ɡilɡ, geːlɡ or gilk), also known as Manx Gaelic, is a Gaelic language of the insular Celtic branch of the Celtic language family, itself a branch of the Indo-European language family. Manx is the historical language of the Manx people. Although only few children native to the Isle of Man speak Manx as a first language, there has been a steady increase in the number of speakers since the death of Ned Maddrell in 1974. He was considered to be the last speaker to grow up in a Manx-speaking community environment.
Consonant mutationConsonant mutation is change in a consonant in a word according to its morphological or syntactic environment. Mutation occurs in languages around the world. A prototypical example of consonant mutation is the initial consonant mutation of all modern Celtic languages. Initial consonant mutation is also found in Indonesian or Malay, in Nivkh, in Southern Paiute and in several West African languages such as Fula. The Nilotic language Dholuo, spoken in Kenya, shows mutation of stem-final consonants, as does English to a small extent.
LenitionIn linguistics, lenition is a sound change that alters consonants, making them more sonorous. The word lenition itself means "softening" or "weakening" (from Latin lēnis 'weak'). Lenition can happen both synchronically (within a language at a particular point in time) and diachronically (as a language changes over time). Lenition can involve such changes as voicing a voiceless consonant, causing a consonant to relax occlusion, to lose its place of articulation (a phenomenon called debuccalization, which turns a consonant into a glottal consonant like h or ʔ), or even causing a consonant to disappear entirely.
