Cymru (English)
Where does "Cymru" come from?
The English name 'Cymru' was borrowed directly from the Welsh 'Cymru'[1]. The Welsh term descends from Middle Welsh 'Kymry', which originates from Proto-Brythonic '*kömroɣ'[2] or earlier '*kombrogis'[3]. This older form combines the Proto-Celtic associative prefix '*kom-' with '*mrogis' meaning 'region' or 'country'[2], which itself traces back to the Proto-Indo-European '*mórǵs' meaning 'frontier' or 'border'[4]. Through these linguistic stages, the word carried the sense of compatriots or fellow countrymen inhabiting the same land.
Open questions
- The intermediate Proto-Brythonic form is reconstructed from later attested descendant terms. [2] [3] [4]
Full etymology tree
- Cymru (English), 'Synonym of Wales: a constituent country of the United Kingdom.'
- borrowed Cymru (Welsh), 'Wales (a constituent country of the United Kingdom)'
- inherited Kymry (Middle Welsh)
- inherited *kömroɣ (Proto-Brythonic), 'compatriot, comrade'
- inherited *kombrogis (Brythonic)
- compound *kom- (Proto-Celtic), 'with, together'
- compound *mrogis (Proto-Celtic), 'border, borderland, march, mark'
- inherited *mórǵs (Proto-Indo-European), 'boundary, border'
- inherited *kombrogis (Brythonic)
- inherited *kömroɣ (Proto-Brythonic), 'compatriot, comrade'
- inherited Kymry (Middle Welsh)
- borrowed Cymru (Welsh), 'Wales (a constituent country of the United Kingdom)'
Ancestors
- Cymru (Welsh)
Cognates and doublets
- Cambria (English)
- Cumbria (English)
Sources
- Cymru (English) - Wiktionary
- Cymru (Welsh) - Wiktionary
- kömroɣ (Proto-Brythonic) - Wiktionary
- mrogis (Proto-Celtic) - Wiktionary
Updated September 2026
Etymology data from Wiktionary, CC BY-SA 4.0 · About Miraris