clanger
noun [ C ] mainly UK informal uk/ˈklæŋ.ər/ us/ˈklæŋ.ɚ/
说错话；失言
something that you say by accident that embarrasses or upsets someone
Claire dropped (= said) a clanger by joking about his dog that's been dead for three months. 克莱尔一时说错话，开玩笑说起他那条已死去3个月的狗。