1. lacking good manners; impolite, rude, or disrespectful in behavior or speech
His ill-mannered behavior at the dinner table embarrassed everyone.
Seu comportamento mal-educado à mesa de jantar constrangeu todos.
2. showing a lack of courtesy or consideration for others
The ill-mannered guest interrupted the speaker several times.
O convidado mal-educado interrompeu o palestrante várias vezes.