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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.

During the period of rapid globalization in the final decade of the last century and the first decade of this, FDI was driven by businesses seeking to cut costs and improve efficiency.

From The Wall Street Journal • Jul. 7, 2026

The United States voiced alarm Monday over Beijing's nuclear program after China test-fired a dummy warhead into the Pacific Ocean, the latest move in its rapid military modernization.

From Barron's • Jul. 7, 2026

Enthusiasm around artificial intelligence has propelled stocks higher at a rapid clip.

From MarketWatch • Jul. 6, 2026

According to the researchers, this rapid expansion makes strong biosafety measures more important than ever.

From Science Daily • Jul. 6, 2026

The car moved through the darkness at a rapid speed, turned left at the Sanctified Church of the Crucified Jesus, and took the Biddle Creek Road which followed the river toward the training depot.

From "The Great Santini" by Pat Conroy

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