1. To make someone less enthusiastic, excited, or hopeful; to reduce someone's morale or confidence
The bad weather dampened spirits at the outdoor festival.
O mau tempo desanimou os participantes do festival ao ar livre.
2. To reduce enthusiasm or positive feelings about something
News of the budget cuts dampened spirits in the office.
A notícia dos cortes orçamentários abateu o ânimo no escritório.