はがんいっしょう 破顔一笑 LinksSentence search for 破顔一笑Sentence search for はがんいっしょうKanji details for 破, 顔, 一 and 笑Edit in JMdict Noun, Suru verb, Intransitive verb1. smiling broadlyYojijukugo (four character compound) Discussions Log in to talk about this word.