1. A strong, energetic, and determined attempt to accomplish something; marked by physical or mental strength and intensity
The team made a vigorous effort to win the championship.
O time fez um esforço vigoroso para vencer o campeonato.
2. Sustained and forceful exertion directed toward achieving a goal
Despite the vigorous effort, they could not complete the project on time.
Apesar do esforço vigoroso, eles não conseguiram completar o projeto a tempo.