Which pronunciation of hwyl is correct? Gwyneth has used both hwill and hool depending on where in the sentence the word was. Does sentence position matter (stressed/unstressed)?
Welsh spelling is usually straightforward, but "wy" is one of the trickier things to master as it can have a few different pronunciations. In this case its a diphthong "oo + ee". Check out https://www.youtube.com/watch?v=E7jKTStLrlY&list=PLz6oFM0_IszwxmU7dMcGQClZ5zMwX2EdY&index=9 if that doesn't make any sense.
"w" is more of an u (oo) sound. And it's because "u" is already used to represent the "ee" sound.