Example:

1. The car accelerated quickly, and we were soon doing 90 miles per hour.

2.Sales have accelerated in recent months and are now 20% higher than they were last year.

3. Our plans for expansion are about to accelerate.

4. He put his foot down on the gas pedal and accelerated away from the police officer who was trying to pull him over.

5. The company has been working hard to accelerate the introduction of its new product line.

Synonyms: speed up, intensify , quicken, hasten, spur on

Antonyms: slow down, decelerate, retard, hinder, impede