The word for perfection in Irish is foirfeacht;
in Scottish Gaelic it is spelled foirfeachd.
It's not Gaelic so why pronounce it.
Gaelic has no letter 'y'.
"Gaelic" can mean "Irish Gaelic' or "Scottish Gaelic". They are classified as two distinct languages.
nae-ul
tar-hoil
dhloo-khara
"bawss" (bás)
That is not a Scottish Gaelic word. It may be a word in the English dialect of Scotland ("Scots" or "Lallans"). Gaelic has no 'w' or 'y'.
ain-taha
[món-yair]
djeel-shakht
The Gaelic word for victory is "buaidh" which phonetically would be: "boo-ee" (not exactly, but it is in the ball park)