[make] an enemy
1
to do something that causes someone to dislike or be angry with you, often leading to a strained relationship
- Engaging in petty rivalries can make an enemy out of a potential ally.
- It's essential to treat everyone with respect; you don't want to make unnecessary enemies.
- Spreading false rumors about a colleague at work can make an enemy within the office.
- If you keep taking credit for their ideas, you'll make an enemy sooner or later
- Cheating in a competition can make an enemy of your fellow competitors.