Formal:
* Pehea ʻoe? (pronounced "peh-eh-ah oh-eh") - This is the most polite and formal way to ask "How are you?"
* ʻEhia ka manawa? (pronounced "eh-hee-ah ka mah-nah-vah") - This literally translates to "What is the time?" but is used in a similar way to "What's up?" in English.
Informal:
* Aloha ʻoe? (pronounced "ah-loh-hah oh-eh") - This is a more casual way to say "hello" or "how are you?"
* ʻAheaha? (pronounced "ah-eh-ah-ha") - This is a very casual way to say "What's up?" and is used between friends.
* Ke ʻano hea? (pronounced "keh ah-no heh-ah") - This means "What's the vibe?" and is a more contemporary and playful way to ask "What's up?"
Other options:
* Maikaʻi? (pronounced "my-kah-ee") - This is a short way to say "good" or "okay" and can be used in response to "What's up?"
* ʻAʻole he mea nui (pronounced "ah-oh-leh heh meh noo-ee") - This literally means "Nothing important" and is a common response to "What's up?"
The best option for you will depend on who you are talking to and the situation.