1. the act of labeling something incorrectly or inaccurately
Usage: British spelling; American spelling is ‘mislabeling’

Examples

• The mislabelling of the chemical containers caused confusion in the laboratory.
• Food safety inspectors found several cases of mislabelling on the product packaging.
• The museum had to correct the mislabelling of several historical artifacts.
• Mislabelling of medications can lead to serious health risks.
• The company faced fines for the mislabelling of their organic products.
• Scientists discovered the mislabelling had affected their research results.