untiring

un·tir·ing

adjective \-ˈtī-riŋ\

Definition of UNTIRING

: not becoming tired : indefatigable <an untiring worker>

— un·tir·ing·ly adverb

Examples of UNTIRING

1. <the camel's reputation as an untiring beast of burden>
2. <the detective's untiring investigation of the crime finally led to several arrests>

First Known Use of UNTIRING

1822

Related to UNTIRING

Synonyms

indefatigable, inexhaustible, unflagging, tireless, 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