Names with a similar meaning:
* Wikiō - meaning "brave" or "strong"
* Lani - meaning "sky" or "heaven"
* Kamaka - meaning "strong" or "powerful"
Names with a similar sound:
* Wiliama (pronounced Wee-lee-ah-mah) - a Hawaiianized version of William
Ultimately, the best way to choose a Hawaiian name for "William" is to consider the specific qualities you want to represent and find a name that resonates with you.