Here are some other options, depending on the context:
* "Mocz" (urine) - This is the most formal and clinical term.
* "Oddawać mocz" (to urinate) - This is a more formal way to say "pee."
* "Chodzić do toalety" (to go to the toilet) - This is a very general and polite way to say "pee."
It's important to note that Polish language has a lot of euphemisms for this word. The best choice depends on the situation and who you are talking to.