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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, rəˈpɪdɪtɪ /

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:

Implicit in the analysts’ models is a belief that Big Tech can use AI to unlock rapid productivity gains, allowing revenue to grow much faster than overhead.

From The Wall Street Journal Jul. 28, 2026

Kelly made a rapid start at Arsenal in the second half of the 2024-25 season, scoring twice and providing five assists, and helping the club win a second Women's Champions League title.

From BBC Jul. 28, 2026

The food industry is not typically one in which investors expect rapid growth.

From MarketWatch Jul. 27, 2026

There was a rapid acceleration of legal knowledge among nonlawyers.

From Slate Jul. 27, 2026

In the rapid movement and shuffle of birds and vehicles and radiator grilles, the tourists did not seem to recognize their positional importance in the flow of order.

From This Side of Wild by Gary Paulsen

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 Wells, H. G. (Herbert George)

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

From Eden An Episode by Saltus, Edgar

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 Trollope, Anthony

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

From Seattle Times May 20, 2022

He is at home equally in the slowest, most tranquil, and most meditative of rhythms, and in the rapidest and most impulsive.

From A Brief History of the English Language and Literature, Vol. 2 by Meiklejohn, John Miller Dow

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

Falling from the summit of St. Peter's, it strikes the earth at the rate of 300 miles an hour, or five times quicker than the rapidest express train.

From All Around the Moon by Roth, Edward

One of the rapidest and most furious Sieges anywhere on record.

From History of Friedrich II of Prussia — Volume 20 by Carlyle, Thomas

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