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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

Derived 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.

The Southern California Assn. of Governments recently released a preliminary map of transit hubs that would be included in the bill that follows Metro’s rapid transit map through Los Angeles County.

From Los Angeles Times • Jun. 9, 2026

A high P/E ratio means investors expect rapid future profit growth for the company, but it can also show that a stock is overvalued.

From MarketWatch • Jun. 8, 2026

She is no stranger to slow starts and rapid finishes in the game's biggest tournaments and there were echoes of Pebble Beach three years ago when she was joint runner-up to Allisen Corpuz.

From BBC • Jun. 8, 2026

The data reflects continuing weak domestic demand in the world’s largest auto market after years of rapid growth and intense competition.

From The Wall Street Journal • Jun. 8, 2026

There were four pops in rapid succession, like a cap gun.

From "The Secret History" by Donna Tartt

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