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inexhaustible

[in-ig-zaws-tuh-buh l] /ˌɪn ɪgˈzɔs tə bəl/
adjective
1.
not exhaustible; incapable of being depleted:
an inexhaustible supply.
2.
untiring; tireless:
an inexhaustible runner.
Origin
1595-1605
1595-1605; < Latin inexhaust(us) not exhausted (see in-3, exhaust) + -ible
Related forms
inexhaustibility, inexhaustibleness, noun
inexhaustibly, adverb
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for in-exhaustibility

inexhaustible

/ˌɪnɪɡˈzɔːstəbəl/
adjective
1.
incapable of being used up; endless: inexhaustible patience
2.
incapable or apparently incapable of becoming tired; tireless
Derived Forms
inexhaustibility, inexhaustibleness, noun
inexhaustibly, adverb
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
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Word Origin and History for in-exhaustibility

inexhaustible

adj.

c.1600, from in- (1) "not, opposite of" + exhaustible (see exhaust). Related: Inexhaustibly.

Online Etymology Dictionary, © 2010 Douglas Harper
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