Words for red in Celtic languages.
|Proto-Celtic||*dergos = red, crimson|
|Old Irish (Goídelc)||derg [dʲerɡ] = red|
|Irish (Gaeilge)||dearg [ˈdʲaɾˠəɡ / ˈdʲæɾˠəɡ] = red, rouge, red ink, glowing, raw, bloody|
|Scottish Gaelic (Gàidhlig)||dearg [dʲɛrɛg] = red, ruddy, flamming, red-hot|
|Manx (Gaelg)||jiarg = red, sanguine, ruddy, bloodshot, rouge, gules, glowing, stark, florid, live, burning, abandoned, fair (intensive), turned (land)|
|Proto-Celtic||*roudos = red|
|Gaulish||*roudos = red|
|Old Irish (Goídelc)||rúad [r͈uːa̯ð] = red, reddish|
|Irish (Gaeilge)||rua [ɾˠuə] = red, reddish-browm, russet, copper-brown; wild, fierce; rough, strong|
|Scottish Gaelic (Gàidhlig)||ruadh [r̪ˠuəɣ] = (browny) red, rust-coloured, ginger, russet; red colour, redness; strength; red deer|
|Manx (Gaelg)||ruy [rɛi/riː] = red, ginger, tan, copper-complexioned, red-haired, foxy, sandy|
|Proto-Brythonic||*rʉð = red|
|Welsh (Cymraeg)||rhudd [r̥ɨːð / r̥iːð] = red, ruddy, purplish, bay, tawny, brown; bloody, covered with blood; scorched|
|Cornish (Kernewek)||rudh [ry:ð / ri:ð] = red|
|Breton (Brezhoneg)||ruz = red|
Etymology: from Proto-Indo-European *h₁rewdʰ- (red) [source]
|Proto-Celtic||*kokko-/*kokki = red|
|Proto-Brythonic||*kox = red|
|Middle Welsh (Kymraec)||coch = red|
|Welsh (Cymraeg)||coch [koːχ] = red, redness, ruddy, scarlet, bloody; ginger (hair); brown; poor, feeble, unskilful|
|Cornish (Kernewek)||coch / cough = red|
Etymology: from the Latin coccum (a scarlet berry), from the Ancient Greek κόκκος (kókkos – berry). This is also the root of coccinus (scarlet, scarlet-dyed), from which comes the English word cochineal, and related words in other languages [source].
Words marked with a * are reconstructions.