What is thank you very much in welsh?

There are a few ways to say "thank you very much" in Welsh, depending on the formality and emphasis you want to convey:

Formal:

* Diolch yn fawr iawn: This is the most direct translation and is appropriate for formal situations.

* Diolch yn fawr iawn i chi: This adds a touch of formality by directly addressing the person you're thanking.

Informal:

* Diolch yn fawr: This is a more casual way to say thank you very much.

* Diolch o galon: This means "thanks from the heart" and conveys a sincere gratitude.

Emphasis:

* Diolch yn fawr iawn iawn: Adding "iawn" again emphasizes the appreciation.

Other options:

* Diolch yn fawr am bopeth: This means "thank you very much for everything."

* Diolch am eich caredigrwydd: This means "thank you for your kindness."

The best option will depend on the context of the situation and your relationship with the person you are thanking.