1. to behave in a manner that shows consideration, deference, and regard for others or their authority
The students were instructed to act respectfully during the ceremony.
Os alunos foram instruídos a agir com respeito durante a cerimônia.
2. to conduct oneself in a polite and courteous manner
Even though he disagreed, he chose to act respectfully in front of his elders.
Apesar de discordar, ele escolheu agir com respeito diante de seus idosos.