ころころ(P);コロコロ;ころんころん
(adv-to,adv,vs) (1) (on-mim) lightly rolling (of a small and round thing)/(2) (on-mim) pleasant, high-pitched sound (e.g. bell, young woman's laughter)/(3) (on-mim) changing frequently (e.g. conversation, plans)/(occurring) in rapid succession (e.g. sumo wrestlers being defeated)/fickly/in a fi