ヤッホー Also written やっほー, やほー Meanings Interjection yoo-hoo; halloo; hi-de-ho; howdy; hey Example sentences 頂上に着くと皆で「ヤッホー」と叫んだ。When we reached the summit, we all yelled "Yahoo!" やっほー。Hi. Word lists Colloquial Familiar language Jinuma: Japanese Dictionary · Word lists