backstabber
Backstabber (noun) means someone who betrays a friend or colleague who trusted them, usually behind their back. Example: “She thought her coworker was a friend, until she found out he was a backstabber who took credit for her ideas.”
How to use backstabber
Learner’s notesIn plain EnglishSomeone who betrays your trust, especially by acting against you secretly while pretending to be on your side.
Word forms
- Plural
- backstabbers
Fill the gap
Can you complete this real example?
She thought her coworker was a friend, until she found out he was a _____ who took credit for her ideas.
Etymology
A straightforward compound of back + stabber, painting the picture of an attack that comes from behind rather than face-to-face.