tumuanga by Cook Islands Maori Database | Apr 12, 2013 | Dictionary: Buse, Taringa, Moekaa | 0 comments nom. Cause. Eaa te tumuanga i to raua pekapeka? What was the cause of their quarrel?; E vai inu te tumuanga o te reira maki. That disease was caused by (bad) drinking water. [tumu, -anga.] Related to tumuanga Submit a Comment Cancel replyYou must be logged in to post a comment.