はがんたいしょう 破顔大笑 LinksSentence search for 破顔大笑Sentence search for はがんたいしょうKanji details for 破, 顔, 大 and 笑Edit in JMdict Noun, Suru verb1. breaking into a hearty laughYojijukugo (four character compound) Discussions Log in to talk about this word.