envubu.

e- (ki/bi) [Stt>. ] whip of hippopotamus hide; whip; whipping; lash of the whip.

e- (n/n) hippopotamus. Ekika ky'E nvubu, the Hippopotamus Clan.

to become dangerous/terrifying/threatening. Envubu zeefudde bbereeje ku bizinga bino. The hippopotamuses have become a major threat on these islands.