起伏 きふく undulation N1 #11,462 Meanings noun, takes する, intransitive undulation ups and downs; highs and lows Its kanji 起 キ · お.きる、お.こる、お.こす、おこ.す、た.つ rouse, wake up, get up 伏 フク · ふ.せる、ふ.す prostrated, bend down, bow, cover, lay (pipes)