What is the hawaiian word for really?

There isn't a single Hawaiian word that perfectly translates to "really" in the same way it's used in English. "Really" can have different meanings depending on context, so the closest translation would depend on the specific meaning you want to convey.

Here are some options and their nuances:

* ʻoiaʻiʻo (oh-ee-ah-ee-oh): This means "truth" or "reality," and can be used to emphasize something is truly real or factual. For example, "ʻOiaʻiʻo, ua nui kēlā pua." (It is truly a big flower.)

* maoli (ma-oh-lee): This means "genuine" or "authentic," and can be used to express something is real or genuine. For example, "Maoli, ua aloha ʻoe iaʻu?" (Are you really, truly, in love with me?)

* ʻoiaʻiʻo loa (oh-ee-ah-ee-oh lo-ah): This literally means "truth very much," and can be used to emphasize something is very real or true. For example, "ʻOiaʻiʻo loa, ʻaʻole au i ʻike iā ia." (Really, I don't know him.)

* ʻoiaʻiʻo maoli (oh-ee-ah-ee-oh ma-oh-lee): This combines both "truth" and "genuine" to emphasize the reality and authenticity of something. For example, "ʻOiaʻiʻo maoli, ua ʻike au iā ia." (Really, I saw him.)

* ʻoiaʻiʻo anei (oh-ee-ah-ee-oh ah-neh-ee): This literally means "is it truth," and can be used to express doubt or disbelief. For example, "ʻOiaʻiʻo anei, e hele ana ʻoe i ka moana?" (Really, are you going to the beach?)

It's important to remember that Hawaiian is a nuanced language, and the best way to express "really" will depend on the specific situation and the intended meaning.