1. lacking propriety, dignity, or good taste; unseemly or improper in behavior or appearance
His indecorous remarks at the formal dinner offended many guests.
Suas observações indecorosas no jantar formal ofenderam muitos convidados.
2. disrespectful or dishonorable; contrary to good manners or social conventions
The politician's indecorous conduct damaged his reputation.
A conduta indecorosa do político danificou sua reputação.