waitoko

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

wáitoko

vi. to engage in suppressing another's speech.

waitoko

n. general interference, obstruction, opposition <oppose>, contrariness <contrary>.

v. to make interfere, etc.