Dadua in the extreme north is a subdialect of Rahesuk, and has been reported to be intelligible with the Iliuun of Liran Island. About half the Dadua population has moved to Timor, on the coast of Manatuto district, where it has undergone influence from Galoli.
Dadua, a dialect spoken in the northern region, is related to Rahesuk and shares understanding with the Iliuun language spoken on Liran Island.  Half of the Dadua population has moved to Timor, located along the coast of Manatuto district, where they have been influenced by Galoli.