1. To accelerate or increase speed towards the conclusion of a race, performance, or activity
The runner decided to build speed at the end to overtake his competitors.
O corredor decidiu aumentar a velocidade no final para ultrapassar seus competidores.
2. To finish strong by progressively increasing pace or momentum
She builds speed at the end of every song to create a dramatic finish.
Ela aumenta a velocidade no final de cada música para criar um final dramático.