How do you say see later in welsh?

There's no single perfect equivalent of "see later" in Welsh, as it depends on the context and level of formality. Here are a few options:

Informal:

* Cwel di'n hwyrach! (pronounced "kwel dee hwee-rach") - This literally means "see you later" and is the most common and natural way to say it in casual settings.

* Hwyl fawr! (pronounced "hwiwl vawr") - This is a general farewell, meaning "goodbye" or "farewell," but can also be used in place of "see later" in informal situations.

* Cadwch chi'n dda! (pronounced "cadwch kee n dda") - This means "take care" and is a friendly way to say goodbye.

Formal:

* Hyd yn hyn (pronounced "hid in hin") - This literally means "until now" and is a more formal way to say "goodbye."

* Cewch chi ddaioni! (pronounced "kewch kee dai-oh-nee") - This means "may you have good fortune" and is a very formal way to say goodbye.

The best choice will depend on your relationship with the person you're speaking to and the situation.