bungabung noun English. A rapidly flowing, frothy river, rapids. Example sentence: Subanen. Su gaitu, kali' mesegbu tug bungabung, mitulag gupia. English. When my raft went into the rapids, it came all apart. Example sentence: Subanen. Su gama' ni Agyas, si Masulung, kali' peglegait, bena' mitugda' su gaiten, misegbu tug bungabung, kali' mekegua', su talipa' laak nu selualeni mibasa'. English. When Agyas" father, Malung, was riding his raft and it ran aground, he fell into the rapids. When he got out of the water, only the cuffs of his trousers were wet.