The Goidelic ɡɔɪˈdɛlɪk or Gaelic languages (teangacha Gaelacha; cànanan Goidhealach; çhengaghyn Gaelgagh) form one of the two groups of Insular Celtic languages, the other being the Brittonic languages.
Goidelic languages historically formed a dialect continuum stretching from Ireland through the Isle of Man to Scotland. There are three modern Goidelic languages: Irish (Gaeilge), Scottish Gaelic (Gàidhlig), and Manx (Gaelg). Manx died out as a first language in the 20th century but has since been revived to some degree.
Gaelic, by itself, is sometimes used to refer to Scottish Gaelic, especially in Scotland, and so it is ambiguous. Irish and Manx are sometimes referred to as Irish Gaelic and Manx Gaelic (as they are Goidelic or Gaelic languages), but the use of the word "Gaelic" is unnecessary because the terms Irish and Manx, when used to denote languages, always refer to those languages. This is in contrast to Scottish Gaelic, for which "Gaelic" distinguishe