How do you say hell yes in Welsh?

There isn't a direct equivalent to "hell yes" in Welsh, as the phrase implies a strong, informal agreement. However, you can express similar sentiments with different phrases depending on the context and desired level of intensity:

Informal:

* "Ie, wrth gwrs!" - This translates to "Yes, of course!" and conveys strong agreement.

* "Ie, yn sicr!" - Meaning "Yes, definitely!" it implies a confident affirmation.

* "Ie, heb os!" - This translates to "Yes, without a doubt!" and suggests absolute certainty.

More emphatic:

* "Ydw i, yn bendant!" - This translates to "Yes, definitely!" and is a more emphatic way to say "yes."

* "Dwi'n cytuno'n llwyr!" - Meaning "I agree completely!" it conveys a strong and unwavering agreement.

Humorous:

* "Ie, a mwy!" - This translates to "Yes, and more!" and is a playful way to express enthusiastic agreement.

Ultimately, the best way to say "hell yes" in Welsh will depend on the situation and the level of formality you want to convey.