maratirati

Bingham: Hiram Bingham, A Gilbertese-English Dictionary (1908, 1953). American Board of Commissioners for Foreign Missions.
Sabatier: Ernest Sabatier, M.S.C., Dictionnaire Gilbertin-Français (1954), translated by Sr. M. Oliva as Gilbertese-English Dictionary (1971). South Pacific Commission Publications Bureau.

Bingham

maræ/tirati

a. nicely polished, very smooth.

maratirati

a. very well oiled, saturated.

vc. kamaratiarati: to make..., to oil, to grease.
kamaratiratia, kamaratia.