前後を忘れる ぜんごをわすれる Meanings Expression, Ichidan verb to lose one's common sense (e.g. in excitement or intoxication); to forget the situation one's in; to lose oneself (in something) Kanji 前 front. Read as ゼン. 後 after 忘 forget. Read as わすれる. Jinuma: Japanese Dictionary · Word lists