1. A genuine and serious attempt to accomplish something, characterized by sincere effort and commitment
Despite the challenges, she made an earnest try to finish the project on time.
Apesar dos desafios, ela fez uma tentativa sincera de terminar o projeto no prazo.
2. A wholehearted effort without pretense or hesitation
His earnest try to learn Portuguese impressed everyone in the class.
A tentativa sincera dele em aprender português impressionou todos na turma.