stylistic:style_transfer, structural:scholar_edition
Languages

The two official languages of the Republic of Ireland are Irish and English. Each language has produced noteworthy literature. Irish, though now only the language of a minority, was the vernacular of the Irish people for thousands of years and was possibly introduced during the Iron Age. It began to be written down after Christianisation in the 5th century and spread to Scotland and the Isle of Man, where it evolved into the Scottish Gaelic and Manx languages, respectively.

The Irish language has a vast treasury of written texts from many centuries and is divided by linguists into Old Irish from the 6th to 10th century, Middle Irish from the 10th to 13th century, Early Modern Irish until the 17th century, and the Modern Irish spoken today. It remained the dominant language of Ireland for most of those periods, having influences from Latin, Old Norse, French and English. It declined under British rule but remained the majority tongue until the early 19th century, and since then has been a minority language.

The Gaelic Revival of the late 19th and early 20th centuries had a long-term influence. Irish is taught in mainstream Irish schools as a compulsory subject, but teaching methods have been criticised for their ineffectiveness, with most students showing little evidence of fluency even after fourteen years of instruction.

There is now a growing population of urban Irish speakers in both the Republic and Northern Ireland, especially in Dublin and Belfast, with the children of such Irish speakers sometimes attending Irish-medium schools (Gaelscoil). It has been argued that they tend to be more highly educated than monolingual English speakers. Recent research suggests that urban Irish is developing in a direction of its own, both in pronunciation and grammar.

Traditional rural Irish-speaking areas, known collectively as the Gaeltacht, are in linguistic decline. The main Gaeltacht areas are in the west, south-west and north-west, in Galway, Mayo, Donegal, western Cork and Kerry with smaller Gaeltacht areas near Dungarvan in Waterford and in Meath.

English in Ireland was first introduced during the Norman invasion. It was spoken by a few peasants and merchants brought over from England and was largely replaced by Irish before the Tudor conquest of Ireland. It was introduced as the official language during the Tudor and Cromwellian conquests. The Ulster plantations gave it a permanent foothold in Ulster, and it remained the official and upper-class language elsewhere, the Irish-speaking chieftains and nobility having been deposed. Language shift during the 19th century replaced Irish with English as the first language for a vast majority of the population.

Fewer than 2% of the population of the Republic of Ireland today speak Irish on a daily basis, and under 10% regularly, outside of the education system and 38% of those over 15 years are classified as "Irish speakers". In Northern Ireland, English is the de facto official language, but official recognition is afforded to Irish, including specific protective measures under Part III of the European Charter for Regional or Minority Languages. A lesser status (including recognition under Part II of the Charter) is given to Ulster Scots dialects, which are spoken by roughly 2% of Northern Ireland residents, and also spoken by some in the Republic of Ireland. Since the 1960s with the increase in immigration, many more languages have been introduced, particularly deriving from Asia and Eastern Europe.

Also native to Ireland are Shelta, the language of the nomadic Irish Travellers, Irish Sign Language, and Northern Ireland Sign Language.