Sut mae'n mynd?
This is a very common and informal greeting. You can also say:
* Sut wyt ti? (more formal and used for singular "you")
* Sut ydych chi? (even more formal and used for plural "you")
There are many different ways to answer depending on how you're feeling. Here are a few examples:
* Yn dda, diolch. (I'm good, thank you.)
* Yn iawn, diolch. (I'm okay, thank you.)
* Ddim yn ddrwg, diolch. (Not bad, thank you.)
* Yn rhyfeddol! (Amazing!)
The Welsh language is very melodic and sounds beautiful when spoken. Don't be afraid to try it out!