1. To become weaker or less effective toward the conclusion of something
The runner started strong but began to lose strength at the end of the race.
O corredor começou forte, mas começou a perder força no final da corrida.
2. To diminish in power, intensity, or impact as something concludes
The movie's plot started well but lost strength at the end.
O enredo do filme começou bem, mas perdeu força no final.
3. To weaken physically or mentally toward the finish
Athletes often lose strength at the end of a long competition.
Os atletas frequentemente perdem força no final de uma longa competição.