Decelerate (verb)

To slow down or decrease the speed of something.

Origin:

Derived from the prefix 'de-' meaning opposite or reversal and 'accelerate' meaning to increase speed.

Examples:

1. The driver decelerated as he approached the red light.
2. The rocket engines were fired to decelerate the spacecraft.
3. The economy has been decelerating for the past year.
4. The aircraft began to decelerate as it prepared to land.
5. The athlete decelerated as he approached the finish line, conserving his energy for the final sprint.