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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.

Keep Reading on Vocabulary.com

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 rapid advance of open-weight models, which make public a set of numerical values governing their behavior, is certainly a concern for closed-model developers.

From The Wall Street Journal Aug. 16, 2026

A senior councillor in one affected area warns there has been a "loss of control" of the planning system, while villagers living near one site likened its rapid construction to a "military operation".

From BBC Aug. 15, 2026

He blamed the rapid spread on "tinder dry" conditions and said the "devastation is extensive".

From Barron's Aug. 14, 2026

This short and rapid burst suggests that CRH has an important function during the earliest stages of the healing response.

From Science Daily Aug. 14, 2026

Lady Constance was done with the hats and had now moved on to gloves, which she tugged on and off in rapid succession.

From "The Unseen Guest" by Maryrose Wood

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

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

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

From Seattle Times May 20, 2022

What an audience—the rapidest, subtlest, wittiest, down to the very cobblers and tinkers, the world has ever seen. 

From Lectures Delivered in America in 1874 by Charles Kingsley

Majesty is forming Magazines at Neisse, Brieg, and the principal Fortresses in those parts; driving on all manner of preparations at the rapidest rate of speed, and looking with his own eyes into everything.

From History of Friedrich II of Prussia — Volume 15 by Thomas Carlyle

He had come to Sagan "by almost the rapidest marches ever heard of,"—or ever till some others of Henri's own, which he made in that neighborhood soon.

From History of Friedrich II of Prussia — Volume 19 by Thomas Carlyle

Did you ever notice that when things are going at the very rapidest rate possible, they seem to be standing perfectly still?

From Dreamland by Julie Mathilde Lippmann

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