What is the correct spelling in Gaelic of skyeman?

There isn't a direct translation of "skyeman" in Gaelic that would maintain the meaning of a person who works in the sky (like a pilot or astronaut). Gaelic doesn't have a single word encompassing that occupation.

To express the idea, you'd need a descriptive phrase. The best phrasing would depend on the *specific* job. For example:

* For a pilot: You might use something like "pìleat" (pilot - this is an English loanword already adapted into Gaelic). Or a more descriptive phrase like "duine a bhios a' fheitheamh air plèana" (a person who flies planes).

* For an astronaut: "speuradair" (astronomer) might be close, but it's not a perfect fit. A more accurate phrase would likely be something like "neach-cosmair" (cosmonaut - another loan word) or a longer descriptive phrase.

In short, there's no single Gaelic word for "skyeman." You need a phrase that conveys the specific occupation.