Words for right & south in Celtic languages.
| Proto-Celtic | *dexswos = right (side), south |
|---|---|
| Old Irish (Goídelc) | dess = right (side), right-hand; south; right, just; convenient, agreeable |
| Irish (Gaeilge) | deas [dʲasˠ / dʲæsˠ] = south, southerly, to the south; right, right-hand |
| Scottish Gaelic (Gàidhlig) | deas [dʲes] = south; southern; right (side); ready, finished; accomplished, expert, skilful; active, alert, quick, snappy; to hand, handy; clever, sharp; deft, dexterous |
| Manx (Gaelg) | jesh = rightwing, righthand, starboard;nice, smart, felicitous, elegant, ready, tidy, groomed, adept, neat, seemly, becoming, suitable, fancy, trim jiass [d͡ʒas] = south, southern, southerly, southward |
| Welsh (Cymraeg) | deau = right; south, southern de [deː] = south; dexterous, skilful, clever; ready; useful, handy; suitable, appropriate, proper, right, just; favourable, auspicious |
| Cornish (Kernewek) | dyhow [dɪ’hɔʊ / də’hɔʊ] = south |
| Breton (Brezhoneg) | dehou = right, south |
Etymology
From Proto-Indo-European *deḱswo-, from *deḱs- (right-hand side).
Words marked with a * are reconstructions.
Sources: Wiktionary, Am Faclair Beag, Online Manx Dictionary, Teanglann.ie, Geiriadur Prifysgol Cymru, Gerlyver Kernewek, Dictionnaire Favereau
You could add that in Gaelg (Manx), the word jiass means south, and is presumably cognate with jesh (which I’d not thought of previously).