What are the Celtic words for moon?

There isn't one single Celtic word for "moon," as Celtic is not a single language but a family of languages with many branches, each with its own vocabulary. The word varies significantly depending on the specific language and even sometimes within dialects of the same language.

However, here are some examples from different Celtic languages:

* Irish: *gealach* (pronounced roughly /ˈɡʲəl̪ˠəx/)

* Scottish Gaelic: *gealach* (similar pronunciation to Irish)

* Manx: *gey-lhiu* (pronounced roughly /ˈɡeɪlʲɪu/)

* Welsh: *lleuad* (pronounced roughly /ˈlɛu̯ad/)

* Breton: *loar* (pronounced roughly /ˈlɔːr/)

These are just a few examples, and the words in other extinct or less-documented Celtic languages would likely be different again. Keep in mind that pronunciation can vary significantly depending on dialect.