How do you write speak later in welsh?

There are a few ways to say "speak later" in Welsh, depending on the context and level of formality:

Informal:

* Siarad yn ddiweddarach: This is the most literal translation and is commonly used among friends.

* Clywch chi yn ddiweddarach: This translates to "Hear you later" and is a more casual way to say goodbye.

Formal:

* Cysylltwch yn ddiweddarach: This means "Contact me later" and is appropriate for more formal situations.

More specific:

* Siarad â chi yn ddiweddarach: This translates to "Speak to you later" and is a good option for both informal and formal situations.

Note: Welsh is a language with many dialects, so there might be other ways to say "speak later" depending on the region.