tireless

[ tahyuhr-lis ]
/ ˈtaɪər lɪs /

adjective

untiring; indefatigable: a tireless worker.

Origin of tireless

First recorded in 1585–95; tire1 + -less

Related forms

tire·less·ly, adverbtire·less·ness, noun
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for tirelessly

British Dictionary definitions for tirelessly

tireless

/ (ˈtaɪəlɪs) /

adjective

unable to be tired; indefatigable

Derived Forms

tirelessly, adverbtirelessness, noun
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