What is the Gaelic translation of uncle?

There isn't one single Gaelic translation for "uncle," as it depends on the specific relationship and which Gaelic language you're using (Scottish Gaelic or Irish Gaelic). The translation would depend on whether the uncle is the brother of your mother or father.

In both Scottish Gaelic and Irish Gaelic, you would need to specify the relationship to accurately translate "uncle." For example, you might use terms related to "brother" of your mother or father, combined with a term of respect or address. There isn't a single, direct equivalent word.