Celtic

noun

: a group of Indo-European languages usually subdivided into Brythonic and Goidelic and now largely confined to Brittany, Wales, Ireland, and the Scottish Highlands see Indo-European Languages Table

Word History

First Known Use

1658, in the meaning defined above

Time Traveler
The first known use of Celtic was in 1658

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Cite this Entry

“Celtic.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/Celtic. Accessed 10 Jun. 2026.

Kids Definition

Celtic

1 of 2 adjective
Celt·​ic ˈkel-tik How to pronounce Celtic (audio) ˈsel- How to pronounce Celtic (audio)
: of, relating to, or characteristic of the Celts or their languages

Celtic

2 of 2 noun
: a group of languages including Gaelic and Welsh
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