speed up

Verb
  1. Move faster (synset 200439133)
    "The car accelerated"
    is a type of: deepen, intensify - become more intense
    subtypes: brisk, brisk up, brisken - become brisk
    same as: accelerate, quicken, speed
  2. Cause to move faster (synset 200440298)
    "He accelerated the car"
    is a type of: alter, change, modify - cause to change; make different; cause a transformation
    same as: accelerate, speed

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