tu'u adverb English. Characteristically of what is genuine, real, true. Example sentence: Subanen. Naa sa' ma'nia, migdayun iin mpanaw, pu' miglalag ma tu'u. English. In that case, he went on walking, traveling on land indeed. petu'utu'u noun English. S.t. held to be true, but by nature unverifiable, superstition. Synonym. tuud 1