inexhaustible

[ in-ig-zaws-tuh-buh l ]
/ ˌɪn ɪgˈzɔs tə bəl /

adjective

not exhaustible; incapable of being depleted: an inexhaustible supply.
untiring; tireless: an inexhaustible runner.

Origin of inexhaustible

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

Related forms

in·ex·haust·i·bil·i·ty, in·ex·haust·i·ble·ness, nounin·ex·haust·i·bly, adverb
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for inexhaustible

British Dictionary definitions for inexhaustible

inexhaustible

/ (ˌɪnɪɡˈzɔːstəbəl) /

adjective

incapable of being used up; endlessinexhaustible patience
incapable or apparently incapable of becoming tired; tireless

Derived Forms

inexhaustibility or inexhaustibleness, nouninexhaustibly, 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