How do you say Waiter or waitress in Yoruba language?

There isn't a single, commonly used word for "waiter" or "waitress" in Yoruba. The most common way to refer to them is:

"Olùṣọ́ṣọ́" (pronounced oh-loo-shoh-shoh)

This word literally means "server" or "attendant" and is used for both male and female servers.

You can also use more specific phrases like:

* "Olùṣọ́ṣọ́ oúnjẹ" (pronounced oh-loo-shoh-shoh oon-jeh) - "Food server"

* "Olùṣọ́ṣọ́ oúnjẹ fún àwọn ọkùnrin" (pronounced oh-loo-shoh-shoh oon-jeh foon aw-on oh-kun-rin) - "Male food server"

* "Olùṣọ́ṣọ́ oúnjẹ fún àwọn obìnrin" (pronounced oh-loo-shoh-shoh oon-jeh foon aw-on oh-bin-rin) - "Female food server"

Remember that in Yoruba, the distinction between waiter and waitress isn't always as strict as in English. The more general term "Olùṣọ́ṣọ́" is widely understood and used in most contexts.