むね 胸がすく Show inflections LinksSentence search for 胸がすくSentence search for むねがすくSentence search for 胸が空くKanji details for 胸Edit in JMdict Expressions (phrases, clauses, etc.), Godan verb with 'ku' ending1. to feel relieved; to feel satisfied; to feel refreshedOther forms胸が空く 【むねがすく】Notes胸が空く: Rarely-used kanji form. Discussions Log in to talk about this word.