1. To become stronger, more intense, or more powerful as something approaches its conclusion or final stages
The team's performance began to strengthen toward the end of the season.
O desempenho do time começou a se fortalecer no final da temporada.
2. To increase in intensity, support, or effectiveness in the latter stages of a process or event
The argument strengthens toward the end of the essay with compelling evidence.
O argumento se fortalece no final do ensaio com evidências convincentes.