落井下石

落井下石 [luò jǐng xià shí]

1. ■ drop down a stone on the man who has fallen into a well -- to maltreat an injured person; add insult to injury; add to the misfortunes of a man who is already unfortunate; drop stones on the man who has fallen into a well; hit [kick] sb. when he is already down; injure a person already in great difficulty; push someone down a well and then drop stones on him; throw stones in after a man has fallen into a well -- to strike a man when he is down