[put|stick] the knife (in|into) {sb}
1
to emotionally harm someone through a significant act of betrayal or hurtful actions
The origin of the idiom "put the knife into someone" likely stems from the imagery of using a sharp knife as a tool for both constructive and destructive purposes. While knives are often used for productive tasks like cutting and cooking, they can also be used for harmful intentions, such as causing injury or harm. It is typically used in situations of conflict, rivalry, or when someone wants to express strong disapproval or resentment towards another person.
- During the heated debate, she really put the knife into her opponent with scathing remarks about his credibility.
- I can't believe he stuck the knife into his friend by spreading those false rumors about him.
- The tabloids are known for putting the knife into celebrities, often reporting scandalous stories to damage their public image.
- Instead of constructive criticism, they decided to stick the knife in their colleague's ideas during the meeting.
- It's unfortunate when friends put the knife into each other over petty disagreements, causing irreparable rifts in their relationships.