| Answer | Crossword Clue |
|---|---|
| WELSH | Celtic language |
| BRETON | Celtic language |
| IRISH | Celtic language |
| IRISH | Celtic language. |
| MANX | Celtic language |
| GAELIC | Celtic language |
| ERSE | Celtic language. |
| ERSE | Celtic language |
| ERSE | A Celtic language |
| BRETON | A Celtic language |
| ERSE | Certain Celtic language |
| CORNISH | A Celtic language |
| OLDIRISH | Pre-1000 Celtic language |
| BRETON | Celtic language of France |
| BRETON | Celtic language spoken in France |
