inexhaustible

in·ex·haust·ible

adj \ˌi-nig-ˈzȯ-stə-bəl\

Definition of INEXHAUSTIBLE

: not exhaustible: as a : incapable of being used up <inexhaustible riches> b : incapable of being wearied or worn out <an inexhaustible hiker>

— in·ex·haust·ibil·i·ty \-ˌzȯ-stə-ˈbi-lə-tē\ noun

— in·ex·haust·ible·ness \-ˈzȯ-stə-bəl-nəs\ noun

— in·ex·haust·ibly \-blē\ adverb

Examples of INEXHAUSTIBLE

1. The world's supply of oil is not inexhaustible.
2. He seems to have inexhaustible energy.

First Known Use of INEXHAUSTIBLE

1601

Related to INEXHAUSTIBLE

Synonyms: indefatigable, tireless, unflagging, untiring, weariless

Related Words: assiduous, conscientious, diligent, meticulous, painstaking, sedulous; determined, dogged, patient, persevering, persistent, pertinacious, plodding, relentless, steadfast, steady, stubborn, tenacious, unabating, unfailing, unfaltering, unflinching, unrelenting, unremitting, unwavering; active, busy, dynamic, energetic, feverish, spirited, vigorous; hard, industrious, intense, laborious, slavish, strenuous

Near Antonyms: indolent, lackadaisical, laggard, lazy, listless, shiftless, slothful, sluggish; apathetic, casual, desultory, languid, spiritless; beat, broken, burned-out (or burnt-out), done in, drained, enervated, jaded, overtaxed, overworked, played out, sapped, spent, tuckered (out), wearied, worn-out

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