1. having an incorrect or inaccurate label
Usage: British spelling; American spelling is ‘mislabeled’

Examples

• The mislabelled jar contained salt instead of sugar.
• Several mislabelled boxes caused confusion during the move.
• The museum discovered that the painting had been mislabelled for decades.
• Mislabelled products were recalled from the store shelves.
• The scientist found that many specimens in the collection were mislabelled.
• The mislabelled medication could have caused serious harm to patients.