Onu Odual (the Odual language) is a poorly studied Central Delta language spoken by the Odual community in the Abua–Odual Local Government Area of Rivers State, Nigeria. The Odual community is divided into three major groups, Adibaam, Arughunya and Abureni groups. The Adibaam group comprises Adada, Emelego, Ogboloma and Okolomade; the Arughunya group comprises Ekunuga, Anyu, Emaarikpoko, Obedum and Odau, while the Abureni group comprises Akani, Amuruto and Emago-Kugbo (cf. Gardner et al.