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tireless

[ tahyuhr-lis ]

/ ˈtaɪər lɪs /

SEE SYNONYMS FOR tireless ON THESAURUS.COM

adjective

untiring; indefatigable: a tireless worker.

Origin of tireless

First recorded in 1585–95; tire¹ + -less

SYNONYMS FOR tireless

unwearied, industrious, hardworking, unfaltering.

SEE SYNONYMS FOR tireless ON THESAURUS.COM

OTHER WORDS FROM tireless

tire·less·ly, adverb tire·less·ness, noun

Words nearby tireless

tire chain, tire iron, tired, tired out, tiree, tireless, tiresias, tiresome, tirewoman, tirich mir, tiring

Example sentences from the Web for tireless

For his tireless assault on evolutionary biology and downsizing the deity to fit within science, I give Meyer second place.

2014: Revenge of the Creationists |Karl W. Giberson |December 27, 2014 |DAILY BEAST
“She was tireless and often seemed in a state of euphoria,” Pausini told police, according to the documents.

Nurse Nasty Suspected of Killing 38 People in Italy |Barbie Latza Nadeau |October 15, 2014 |DAILY BEAST
His tireless courage inspired us to rise above the devastation.

The Resilient City: New York After 9/11 |John Avlon |September 11, 2014 |DAILY BEAST
Your tireless and heroic sacrifices have made it possible for me to be here today.

Bill Clinton: Nelson Mandela Was 'The Only Free Man I Ever Knew' |Nina Strochlic |February 18, 2014 |DAILY BEAST

The gun advocates are tireless and they bet on suburban swing voters forgetting about their anger.

What We Didn’t Learn After Newtown |John Avlon |December 8, 2013 |DAILY BEAST
In the course of time, as the result of Grenfell's tireless efforts, a marvelous change for the better took place.

The Story of Grenfell of the Labrador |Dillon Wallace
These tireless birds seem to pass almost the entire day on the wing in pursuit of insects upon which they feed almost exclusively.

Birds and Nature, Vol. 12 No. 1 [June 1902] |Various
Not only was he a tireless worker, but he was quick as a flash to see what was needed.

Carl and the Cotton Gin |Sara Ware Bassett
She, with her tireless energies, was not one to cry forever over milk hopelessly spilt.

V. V.'s Eyes |Henry Sydnor Harrison
Rand was quick at divining men, and now he thought, "This man would make a tireless enemy."

Lewis Rand |Mary Johnston

British Dictionary definitions for tireless

tireless

/ (ˈtaɪəlɪs) /

adjective

unable to be tired; indefatigable

Derived forms of tireless

tirelessly, adverb tirelessness, noun