Formal:
* Croeso adref: This is the most common and literal translation, meaning "Welcome home."
* Croeso cynnes adref: This means "Warm welcome home," adding a touch of warmth and hospitality.
Informal:
* Croeso nôl: This is a shorter and more casual way to say "Welcome back" or "Welcome home."
* Hwyl fawr adref: This means "Enjoy yourself at home" and is more appropriate for someone who is returning after a trip or a long absence.
Other variations:
* Dychwelwch yn dda adref: This means "Return well home" and is a more formal way to wish someone a safe journey home.
* Pob lwc adref: This means "Good luck at home" and is a more lighthearted way to wish someone a good time.
The best way to choose the right phrase depends on the situation and your relationship with the person you are talking to.