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Synonyms

utmost

American  
[uht-mohst, -muhst] / ˈʌtˌmoʊst, -məst /

adjective

  1. of the greatest or highest degree, quantity, or the like; greatest.

    of the utmost importance.

    Synonyms:
    major, chief, foremost, maximum
  2. being at the farthest point or extremity; farthest.

    the utmost reef of the island.


noun

  1. Also the greatest degree or amount.

    the utmost that can be said;

    The hotel provides the utmost in comfort.

  2. the most or best of one's abilities, powers, etc..

    He did his utmost to finish on time.

  3. the extreme limit or extent.

    His patience was taxed to the utmost.

utmost British  
/ ˈʌtˌməʊst /

adjective

  1. of the greatest possible degree or amount

    the utmost degree

  2. at the furthest limit

    the utmost town on the peninsula

"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

noun

  1. the greatest possible degree, extent, or amount

    he tried his utmost

"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 utmost

First recorded before 900; Middle English utmest, Old English ūtemest; equivalent to out + -most

Explanation

Utmost means "the greatest extent or amount." When you work as hard as you possibly can, you do your utmost to accomplish your goal. Whenever something is the most, it can be described as the utmost. If a message is of the utmost importance, it's as important as it possibly can be. Any time you want to really want to emphasize that you believe in something more than anything else or truly intend to do something, do your utmost to use the word utmost.

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Vocabulary lists containing utmost

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:

That has sidelined Seoul, with Lee voicing respect for Trump's decision and pledging to "do his utmost" to support his peacemaking efforts.

From Barron's Aug. 21, 2026

The label said Laforteza has been receiving "the utmost support" and consulting medical professionals, and has been advised to dedicate time to "extended rest and ongoing care to ensure a full recovery".

From BBC Aug. 7, 2026

“I fly corporate jets for a living and have utmost confidence in aircraft and the way they’re maintained,” he said.

From Los Angeles Times Jul. 28, 2026

First Minister John Swinney said the government and emergency services will continue to treat the blaze with the utmost seriousness until the last flames are out.

From BBC Jul. 25, 2026

“I want to thank you so much for coming in and for giving us the chance to reassure you that the health and welfare of our residents is of the utmost importance,” she began.

From "Not Nothing" by Gayle Forman

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