What is a Celtic language?

Answer:
The modern Celtic languages are:

Irish
Scottish Gaelic
Manx
Welsh
Breton
Cornish

and various extinct languages: Gaulish, Celtiberian, Lepontic, Galatian, etc.
First answer by Sheena2002. Last edit by 2k3r021. Contributor trust: 236 [recommend contributor recommended]. Question popularity: 2 [recommend question].