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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:

"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

Few people were more agnostically alive than Stoppard, who loved the finer things in life and handsomely earned them with his inexhaustible wit.

From Los Angeles Times Nov. 30, 2025

But again, these are not inexhaustible pots of money.

From The Wall Street Journal Oct. 24, 2025

After that visit Dries wrote to his parents that the paintings of Delacroix were “an inexhaustible topic of discussion” for him and Theo.

From "Vincent and Theo: The Van Gogh Brothers" by Deborah Heiligman

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