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Synonyms

rapid

American  
[rap-id] / ˈræp ɪd /

adjective

rapider, rapidest
  1. occurring within a short time; happening speedily.

    rapid growth.

  2. moving or acting with great speed; swift.

    a rapid worker.

  3. characterized by speed.

    rapid motion.


noun

  1. Usually rapids a part of a river where the current runs very swiftly.

rapid British  
/ ˈræpɪd /

adjective

  1. (of an action or movement) performed or occurring during a short interval of time; quick

    a rapid transformation

  2. characterized by high speed

    rapid movement

  3. acting or moving quickly; fast

    a rapid worker

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Synonym Usage

See quick.

Other Word Forms

Etymology

Origin of rapid

First recorded in 1625–35, rapid is from the Latin word rapidus “tearing away, seizing, swift”; see rape 1, -id 4

Explanation

Rapid means happening with great speed or in a brief period of time. Think of Rapid Eye Movement (REM sleep), when your eyes are darting back and forth quickly — trying to follow your fast-paced dreams. Rapid comes from the Latin word rapere, which means "to hurry away" or "to seize." If you are first to raise your hand in class with the correct answer, your teacher will be pleased with your rapid response. Your pulse may be rapid after you run a quick sprint, and after a rapid run-up in the stock market you may decide to sell some shares and lock in the profit.

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Vocabulary lists containing rapid

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

The benefits of GLP-1s extend far beyond weight loss, although we are still in uncharted territory when it comes to the lifestyle changes that should accommodate rapid weight loss, including building strength and bone density.

From MarketWatch ● Oct. 5, 2026

It’s been a rapid comedown for a heavyweight that basked in its return to the mountaintop.

From The Wall Street Journal ● Oct. 5, 2026

Famous for their rapid responses, the 3,000 members of Zaka are often the first to arrive on the scene of attacks or serious accidents and are trained to help survivors before tending to the dead.

From Barron's ● Oct. 5, 2026

Understanding those rapid changes could help explain why even a relatively short walk may help stimulate bowel function.

From Science Daily ● Oct. 5, 2026

Even though I can feel my rapid heartbeat at the base of my throat, I ignore it and focus my attention on the conversation.

From "Finding Junie Kim" by Ellen Oh

In the shallow streamlet of her lowly life the waters might have glided on, slow but smoothly, had he not taught them to be ambitious of a rapider, grander course.

From The American Senator by Anthony Trollope

To overwrought nerves as were hers, the announcement was rapider in its effect than a microbe.

From Eden An Episode by Edgar Saltus

That sort of thing came to the Roman Empire slowly, in the course of lifetimes, but nowadays we lived in a rapider world—with flimsier institutions.

From Mr. Britling Sees It Through by H. G. (Herbert George) Wells

“The ’80s in Korea was when we had the rapidest growth ever,” says Lee.

From Seattle Times ● May 20, 2022

In rapidest swing the original main motives now sing a joint verse in a kind of reprise, with the wild shriek at the end of the line, to a final crashing height.

From Symphonies and Their Meaning; Third Series, Modern Symphonies by Philip H. Goepp

And is by nature the rapidest soul now alive.

From History of Friedrich II of Prussia — Volume 18 by Thomas Carlyle

She would allow nothing but the simplest and rapidest methods; and Marie had been secretly alarmed lest her hand should lose her cunning.

From Eleanor by Mrs. Humphry Ward

It was the rapidest and most dastardly flight you could possibly conceive; but it was a great compliment to the argumentative powers of the Parson, and he felt it as such.

From The International Monthly, Volume 2, No. 4, March, 1851 by Various

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