一いっ変ぺんTop 9000MeaningsNounSuru verbTransitive verbIntransitive verb1. complete change; about-faceKanji used一one変changePitch accentいっぺんExamples1夫ふ妻さいは化か学がくを近きん代だい科か学がくへと一いっ変ぺんさせた。The couple transformed chemistry into a modern science.