Formal:
* Aloha kakahiaka: This means "good morning" but is also used as a formal farewell.
* Aloha auinala: This means "good afternoon" and can also be used as a formal farewell.
* Aloha ahiahi: This means "good evening" and can also be used as a formal farewell.
Informal:
* Aloha: This is the most common and versatile farewell, meaning "hello" and "goodbye."
* A hui hou: This means "until we meet again" and is a more personal farewell.
* E komo mai: This means "come in" but can also be used as a farewell, wishing someone a good time.
Other options:
* Mahalo: This means "thank you" and can also be used as a farewell, especially if you're grateful for their company.
* E ola: This means "live" and is a blessing often used as a farewell.
The best way to say goodbye in Hawaiian will depend on the context and your relationship with the person you're saying goodbye to.