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Celtic

American  
[kel-tik, sel-] / ˈkɛl tɪk, ˈsɛl- /
Also Keltic

noun

Celtics plural
  1. a branch of the Indo-European family of languages, including especially Irish, Scottish Gaelic, Welsh, and Breton, which survive now in Ireland, the Scottish Highlands, Wales, and Brittany. Celt, Celt.


adjective

  1. of the Celts or their languages.

Celtic British  
/ ˈsɛl-, ˈsɛl-, ˈkɛltɪk, ˈkɛltɪˌsɪzəm /

noun

  1. a branch of the Indo-European family of languages that includes Gaelic, Welsh, and Breton, still spoken in parts of Scotland, Ireland, Wales, and Brittany. Modern Celtic is divided into the Brythonic (southern) and Goidelic (northern) groups

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

adjective

  1. of, relating to, or characteristic of the Celts or the Celtic languages

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Other Word Forms

Derived Forms

Inflected Forms

Nouns

Etymology

Origin of Celtic

First recorded in 1600–10; from Latin Celticus, equivalent to Celt(ae) “the Celts” + -icus adjective suffix; see origin at Celt, -ic ( def. 1 )

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Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

He speaks and reads Latin, the language of the Roman Empire, though perhaps he addresses his tenants in Brittonic, the Celtic tongue of the British Iron Age.

From The Wall Street Journal • Jul. 7, 2026

Keri Hulme shapes her novel out of all three of their voices, a kind of collective poetry of Maori and Celtic mythology.

From The Wall Street Journal • Jul. 6, 2026

Postecoglou guided Spurs to glory in the Europa League in 2025 having previously enjoyed a successful stint in charge of Celtic where he won back-to-back Scottish Premiership titles.

From BBC • Jul. 3, 2026

It was just about 16,000 for Scottish Premiership matches last campaign, a number heavily inflated by the crowds Celtic and Rangers attract.

From BBC • Jun. 26, 2026

His head was shaved and his arms were covered with Celtic tattoos.

From "Boy21" by Matthew Quick

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