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Synonyms

clarion

American  
[klar-ee-uhn] / ˈklær i ən /

adjective

  1. clear and shrill.

    the clarion call of a battle trumpet.


noun

  1. an ancient trumpet with a curved shape.

  2. the sound of this instrument.

  3. any similar sound.

clarion British  
/ ˈklærɪən /

noun

  1. a four-foot reed stop of trumpet quality on an organ

  2. an obsolete, high-pitched, small-bore trumpet

  3. the sound of such an instrument or any similar sound

"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

adjective

  1. (prenominal) clear and ringing; inspiring

    a clarion call to action

"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

verb

  1. to proclaim loudly

"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

Etymology

Origin of clarion

1275–1325; Middle English < Medieval Latin clāriōn- (stem of clāriō ) trumpet, equivalent to clār- clear + -iōn- -ion

Explanation

If you hear the clarion call of the stage, it means you want to be an actor. Clarion means loud and clear, and a clarion call is a call to something that is hard to ignore. A clarion is a medieval horn with a clear sound. Hard to ignore, but also pure and clear in tone. There's nothing shrill about a "clarion call." Martin Luther King Jr.'s clarion call for all races in the U.S. to live together in peace and harmony has lived on after his death.

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Vocabulary lists containing clarion

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.

Xia’s clarion call, meanwhile, starts with robot-captured images of leaking barrels on the ocean floor.

From Los Angeles Times • Nov. 21, 2025

And he raises an alarm, with clarion sharpness, about an authoritarian specter.

From The Wall Street Journal • Nov. 7, 2025

And what - if anything - survives of the great outpouring of international support, whose clarion call in the days after the murders was Je suis Charlie?

From BBC • Jan. 6, 2025

Thurman’s story needs to be a clarion call to physicians to act on behalf of our patients, no matter where they live.

From Slate • Sep. 18, 2024

No high-res shots of little Nate Foster scurrying around the Christmas tree, belting “Santa Baby” in a clarion, silver soprano.

From "Better Nate Than Ever" by Tim Federle