How to say ‘Happy Birthday’ in Welsh

The Welsh way of saying Happy Birthday is Pen blwydd Hapus or Pen-blwydd Hapus.
You may also see it spelt (incorrectly) as Penblwydd Hapus.
The word pen-blywdd (birthday) is made up of two words: pen (head, end, chief, top) and blwydd (year). The plural is pen-blwyddi.

A more formal way of saying Happy Birthday is as follows:

Dymuniadau gorau ar ben dy flwydd!
OR
Dynumiadau gorau ar dy ben-blwydd!

“Best wishes for a happy birthday!”

Pronunciation Video