Hawaiian Word of the Day: April 14th By Leilani Poli`ahu • 15 hours ago ShareTweetEmail A kupua is a demi-god, or cultural hero, especially a supernatural being possessing several forms, one possessing magical powers. Kupua can often change their form and may assume non god-like, very everyday things. Listen Listening... / 0:29 Tags: HWOTDhawaiianWordShareTweetEmailView the discussion thread.