Formal:
* A hui hou kakou: This is the most common and formal way to say goodbye, meaning "until we meet again."
* A hui hou: This is a shorter version of the phrase, still formal but slightly more casual.
* E ho'i hou: This means "return again," implying that you'll see the person again in the future.
Informal:
* Aloha kakahiaka: This means "good morning," but can be used as a farewell with the connotation of seeing each other again soon.
* Aloha auinala: This means "good afternoon" and has the same connotation as "aloha kakahiaka."
* Aloha ahiahi: This means "good evening" and has the same connotation as the other two aloha greetings.
More specific options:
* A hui hou ma kahi e: This literally means "until we meet again in another place," implying that you'll see the person in a different location.
* A hui hou i ka manawa e hiki mai ana: This means "until we meet again in the future," implying a specific time for a reunion.
Ultimately, the best way to say "goodbye until we meet again" in Hawaiian depends on the context and your relationship with the person you are saying goodbye to.