1. to become weary, exhausted, or lose energy as something approaches its conclusion
The runner began to tire toward the end of the marathon.
O corredor começou a cansar-se no final da maratona.
2. to lose interest or enthusiasm as an activity, event, or period nears completion
The audience started to tire toward the end of the three-hour film.
O público começou a ficar cansado no final do filme de três horas.