kuba

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

kúba

vi. to start suddenly from fright.

n. a sudden start from fright, sudden and violent fright.

kuba

n. surprise, astonishment.

va. to be surprised, to be astonished, to be stupefied, to be nonplussed.