speed up

1. 1.

   move faster

   “The car accelerated”

   Synonymsacceleratespeedquicken

   Broaderintensify

   Narrowerbrisk
2. 2.

   cause to move faster

   “He accelerated the car”

   Synonymsacceleratespeed

   Broaderchange

Questions about speed up

What does speed up mean?

speed up means "move faster". That is the primary sense; the word has 2 in total, listed in full on this page.

What is another word for speed up?

Close synonyms include accelerate, speed, quicken, accelerate, speed. Each sense on this page lists its own synonyms, because a word with several meanings rarely has one substitute that works for all of them.

Is speed up a common word?

speed up is banded "Uncommon" — turns up in careful writing rather than conversation. The band comes from how often the word appears in a large corpus of everyday English, not from an editor's impression.