1. A complete, careful, and detailed attempt to accomplish something with attention to all aspects
The team made a thorough effort to meet the deadline.
O time fez um esforço minucioso para cumprir o prazo.
2. Diligent and conscientious work that leaves nothing overlooked
She put in a thorough effort to understand the complex project.
Ela fez um esforço completo para compreender o projeto complexo.