及物动词
1. 勒索；敲诈；讹诈
Blackmail is the action of threatening to reveal a secret about someone, unless they do something you tell them to do, such as giving you money.
2. （情感或道德上的）迫使，胁迫
If you describe an action as emotional or moral blackmail, you disapprove of it because someone is using a person's emotions or moral values to persuade them to do something against their will.
3. 勒索；敲诈；讹诈
If one person blackmails another person, they use blackmail against them.
1. extortion of money by threats to divulge discrediting information