mix-up
- n a mistake that results from taking one thing to be another
- When my mother, panicked, called to tell me that the insurance company was refusing to pay Pat's claims, I told her not to worry; bureaucratic mix-up, I assumed.
- It was just a mix-up.
- He claims that a mix-up with the stem cells resulted in the wrong stem-cell lines--ones he did not create--being published in Science.