v. i. | 1. | to reduce speed; |
v. t. | 1. | to cause to reduce speed. Opposite of |
Verb | 1. | decelerate - lose velocity; move more slowly; "The car decelerated" Antonyms: |
2. | decelerate - reduce the speed of; "He slowed down the car" Synonyms: slow down Antonyms: |