Antonyms of noun acceleration

3 senses of acceleration

Sense 1
acceleration -- (an increase in rate of change; "modern science caused an acceleration of cultural change")
       Antonym of deceleration (Sense 1)
      => deceleration, slowing, retardation -- (a decrease in rate of change; "the deceleration of the arms race")

Sense 2
acceleration, quickening, speedup -- (the act of accelerating; increasing the speed)
       Antonym of deceleration (Sense 3)
      => deceleration -- (the act of decelerating; decreasing the speed; "he initiated deceleration by braking")

Sense 3
acceleration -- ((physics) a rate of increase of velocity)
       Antonym of deceleration (Sense 2)
      => deceleration -- ((physics) a rate of decrease in velocity)

Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun acceleration

3 senses of acceleration

Sense 1
acceleration -- (an increase in rate of change; "modern science caused an acceleration of cultural change")
       => change, alteration, modification -- (an event that occurs when something passes from one state or phase to another; "the change was intended to increase sales"; "this storm is certainly a change for the worse"; "the neighborhood had undergone few modifications since his last visit years ago")

Sense 2
acceleration, quickening, speedup -- (the act of accelerating; increasing the speed)
       => speed, speeding, hurrying -- (changing location rapidly)

Sense 3
acceleration -- ((physics) a rate of increase of velocity)
       => rate -- (a magnitude or frequency relative to a time unit; "they traveled at a rate of 55 miles per hour"; "the rate of change was faster than expected")