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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

  • inexhaustibility noun
  • inexhaustibleness noun
  • inexhaustibly adverb

Etymology

Origin of inexhaustible

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

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.

Turns out that “inexhaustible” abundance is not all it’s cracked up to be.

From The Wall Street Journal

The Southwest was soon to become home, for a portion of each year, and it would also provide virtually inexhaustible subjects for her iconic paintings.

From The Wall Street Journal

Above us in the galaxy are inexhaustible resources and infinite living space.

From The Wall Street Journal

“Boss Lincoln” is emphatically not a political-science tract; Mr. Pinsker makes his points within a gripping chronological narrative that consistently animates Lincoln’s inexhaustible quest.

From The Wall Street Journal

She, however, accrued an inexhaustible supply of IOUs.

From Barron's

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.