Other contributors have said "What is the Celtic word for the word my?" is the same question as "What are the Celtic words for 'my'?" If you believe that these are not asking the same thing and should be answered differently, click here

What are the Celtic words for 'my'?

Answer:
There is no such language as Celtic. The word "Celtic" refers to a group of more than a dozen different languages, 6 of which are still spoken today:
Irish: mo
Scottish Gaelic: mo
Manx:
Welsh: fy
Breton:
Cornish:

In Celtic languages "my" usually changes the first letter of the next word;
in Irish "my son" would be "mo mhac"; mac being the unmodified root word.
This would not apply if the first letter is a vowel.
Contributor: Adamlance
First answer by 2k3r021. Last edit by 2k3r021. Contributor trust: 237 [recommend contributor recommended]. Question popularity: 2 [recommend question].