aintoa

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

áintoa

a. powerful, of great muscular strength.

aintoa

n. physical strength, a strong man, giant.

a. strong, tough.

vt. ka-aintoa, kakaaintoa: to be taken for or take for a Herculean, to boast about the strength of, or to make strong.

ex. te urianibati: sorcery to make strong.