1. behavior that is not in accordance with accepted standards, rules, or morality; inappropriate or unethical actions
The official was fired for improper conduct during the investigation.
O funcionário foi demitido por conduta imprópria durante a investigação.
2. violation of professional or social standards of decorum and propriety
The lawyer was disciplined for improper conduct toward a witness.
O advogado foi disciplinado por conduta imprópria em relação a uma testemunha.