put the boot in
成語所屬單字boots
put the boot in — 慣用語
1. to kick someone when they are already on the ground, or to treat someone cruelly
1.慣用語
釋義
趁火打劫；落井下石
to kick someone when they are already on the ground, or to treat someone cruelly when they are already in a difficult situation
例句
The team was already losing badly, and then the other side really put the boot in with two more goals.