How do you say registration in Welsh?

The most common translation for "registration" in Welsh is " cofrestru".

Here are some other possibilities, depending on the specific context:

* "Cofrestriad": This is the noun form, meaning "registration" itself.

* "Cofrestru'n rhif": This means "to register a number".

* "Cofrestru'n enw": This means "to register a name".

The best translation will depend on the specific situation.

For example, if you are talking about registering for a class, you would use " cofrestru". If you are talking about the process of registering a car, you would use "Cofrestriad".