しつぼうらくたん 失望落胆 LinksSentence search for 失望落胆Sentence search for しつぼうらくたんKanji details for 失, 望, 落 and 胆Edit in JMdict Noun, Suru verb1. being disappointed and disheartenedYojijukugo (four character compound) Discussions Log in to talk about this word.