1. to reduce speed or pace gradually as one approaches the conclusion of something
The runner began to decelerate toward the end of the race.
O corredor começou a desacelerar no final da corrida.
2. to slow down the momentum or intensity of an activity, project, or process as it nears completion
The company decided to decelerate toward the end of the fiscal year.
A empresa decidiu desacelerar no final do ano fiscal.