Here are some options:
General completion:
* Pau: This is the most common word used for "finished" or "done," and can sometimes be used to mean "complete."
* Hoʻopau: This means "to finish" or "to complete" and can be used as a verb or a noun.
* Hoʻokō: This means "to accomplish" or "to fulfill" and is used when something is completed successfully.
Specific situations:
* Piha: This means "full" or "filled" and can be used when something is completely filled or occupied.
* Holoʻokoʻa: This means "whole" or "entire" and can be used when something is complete in the sense of being undivided or whole.
* Hoʻopihapiha: This means "completely filled" and can be used to describe something that is completely full to the brim.
Ultimately, the best Hawaiian word for "complete" will depend on the context and the specific meaning you want to convey.