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) |
Etymology from Proto-Indo-European *dʰerg- (to dim, darken) [source]. The English word dark comes from the same root [source].
| 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.
Sources: Wiktionary, Am Faclair Beag, Online Manx Dictionary, Teanglann.ie, Geiriadur Prifysgol Cymru, Gerlyver Kernewek, Dictionnaire Favereau






