なんじゃらほいMeanings1interjectionwhat is it?; what's this?usually written using kana aloneCasual, slightly old-fashioned or dialectal interjection expressing mild surprise or curiosity, similar to 何だこれは but with a playful tone.なんじゃらほい、この箱はこは？What's this box?なんじゃらほい、急きゅうに呼よび出だして。What's up, calling me out of the blue?
