inexhaustible

[in-ig-zaws-tuh-buhl]

adjective

1. not exhaustible; incapable of being depleted.

   an inexhaustible supply.

2. untiring; tireless.

   an inexhaustible runner.

inexhaustible

/ ˌɪnɪɡˈzɔːstəbəl /

adjective

1. incapable of being used up; endless

   inexhaustible patience

2. incapable or apparently incapable of becoming tired; tireless

Other Word Forms

• inexhaustibility noun
• inexhaustibleness noun
• inexhaustibly adverb

Word History and Origins

Origin of inexhaustible¹

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

Example Sentences

All along he poured his inexhaustible love of tricky form into doodles he calls “ambigrams.”

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On “Your Show of Shows” and other sketch programs, Sid Caesar mined a comic vein that seemed, in its time, inexhaustible.

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The poverty of Newark, N.J., in fact, served as Roth’s inexhaustible native ground.

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But again, these are not inexhaustible pots of money.

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It will find new cures for deadly diseases, solve climate change and invent an inexhaustible supply of clean energy, they argue.

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Related Words

• bountiful 
• endless 
• infinite 
• limitless 
• never-ending