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inexhaustible

American  
[in-ig-zaws-tuh-buhl] / ˌɪn ɪgˈzɔs tə bəl /

adjective

  1. not exhaustible; incapable of being depleted.

    an inexhaustible supply.

  2. untiring; tireless.

    an inexhaustible runner.


inexhaustible British  
/ ˌɪnɪɡˈzɔːstəbəl /

adjective

  1. incapable of being used up; endless

    inexhaustible patience

  2. incapable or apparently incapable of becoming tired; tireless

"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

Other Word Forms

Etymology

Origin of inexhaustible

1595–1605; < Latin inexhaust ( us ) not exhausted ( see in- 3, exhaust) + -ible

Explanation

When something is inexhaustible, you'll never run out of it. If your grandfather appears to have an inexhaustible supply of nostalgic stories, it seems like he could tell them forever. Unfortunately, if the kids you're babysitting have inexhaustible amounts of energy, they are never going to fall asleep. But if you've got an inexhaustible supply of Disney movies for them to watch, you'll be able to keep them distracted until their parents come home. This adjective combines the prefix in-, "opposite of," and exhaustible, from the Latin exhaurire, "take away, use up, or empty." So when something can't be used up, it's inexhaustible.

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Vocabulary lists containing inexhaustible

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:

Not so long ago, it was seen as a land of opportunity for western carmakers, where the rapidly expanding middle classes seemed to have an inexhaustible appetite for upmarket foreign-badged vehicles.

From BBC ● Sep. 7, 2026

"For a long time we were chasing only volumes, quantity -- after all, Russia was an inexhaustible market for us."

From Barron's ● Jul. 14, 2026

“More often than not, those who have inexhaustible means, like the billionaires, they get what they want.”

From Slate ● Jun. 1, 2026

How the RSF appears to have an inexhaustible supply of drones has been the subject of speculation, but observers say it has a wealthy Persian Gulf patron of its own in the United Arab Emirates.

From Los Angeles Times ● May 24, 2026

He was everywhere at once, pushing, pulling, sawing, hammering, improvising, jollying everyone along with comradely exhortations and giving out from every fold of his body what seemed an inexhaustible supply of acrid-smelling sweat.

From "1984" by George Orwell

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