勘違い

かんちがい

misunderstanding; mistaken idea; wrong guess

noun suru-verb vi

N2 freq #27

Example sentences

彼女（かのじょ）が会（あ）いにくるだろうと思（おも）ったのは彼（かれ）の勘違（かんちが）いだった。

He was in error in assuming that she would come to see him.