There are multiple definitions - click on the translation that matches your context.

ato ilícito

substantivo

full

misconduct

noun

Definitions of misconduct

English

behaviour that is improper, wrongful or unlawful

Even when there has been misconduct on the part of a seller, a consumer may still have to perform his or her part of the contract.

English

conduct in breach of some established rule

Mr Meredith faces accusations of serious professional misconduct.