* "Hīnaki" is the most common word for toilet, but it can also refer to a latrine or a place where people defecate. It's the closest equivalent to "toilet" in English, though it might sound a bit informal.
* "Wharepaku" is a more formal and respectful term for toilet. It literally means "house of the feces".
* "Rūmapaku" is another option, meaning "fecal room".
It's always best to check with a Māori speaker to see what word is most appropriate in a particular situation.