untiring

adjective

ˌən-ˈtī-riŋ How to pronounce untiring (audio)
Definition of untiringnext
as in meticulous
showing no signs of weariness even after long hard effort the camel's reputation as an untiring beast of burden the detective's untiring investigation of the crime finally led to several arrests

Synonyms & Similar Words

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Antonyms & Near Antonyms

Example Sentences

Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Recent Examples of untiring All speakers paid tribute to Jack Gross, owner of the new station, for his untiring efforts to bring San Diego its own television station. — sandiegouniontribune.com, 17 May 2018 Still, Clark's adrenaline and untiring preparation propelled her to a second place finish in Oslo and a third place finish at the Burton US Open the following month. — Nihal Kolur, SI.com, 30 Oct. 2017 The public eye in Pakistan today is an unforgiving, untiring beast that never sleeps. — chicagotribune.com, 4 Aug. 2017 Corrupt regimes long reviled by their populace are being brought down left and right, thanks to the brilliant and untiring efforts of democracy activists. — Bruce Sterling, WIRED, 16 Feb. 2011
Recent Examples of Synonyms for untiring
  1. meticulous
  2. indefatigable
  3. tireless
  4. relentless
  5. unflagging
  6. conscientious
  7. active
  8. vigorous
Adjective
  • Harris also helped shape the movie’s imagination sequences, pushing Pixar’s artists toward more spontaneous, painterly images rather than the studio’s usual meticulous realism.
    — Davide Abbatescianni, Variety, 16 Oct. 2026
  • While the restorations are only to the marble surface of the building, the meticulous nature of the job would have disrupted all aspects of the Plaza experience for would-be guests.
    — Timothy Latterner, Condé Nast Traveler, 16 Oct. 2026
Definition of meticulous
Adjective
  • The indefatigable Hellboy and Sons of Anarchy star, now 76, has half a dozen films in production, and next year is aiming to play Ernest Hemingway in a new biopic set in Cuba and will co-star in the anticipated Sons of Anarchy spinoff Legends.
    — Andreas Wiseman, Deadline, 14 Oct. 2026
  • Musicians Julien Baker and Lucy Dacus, Saturday Night Live’s Sarah Sherman, Oscar winner and indefatigable activist Susan Sarandon, and Einbinder all showed up to rebuke the speech, citing the UN’s own labeling of Israel’s war on Gaza a genocide.
    — Ryan Coleman, Entertainment Weekly, 25 Sep. 2026
Definition of indefatigable
Adjective
  • Bartel, by far the most tireless promoter of the Beatles connection with southern Illinois, is himself 77.
    — Christopher Borrelli, Chicago Tribune, 18 Oct. 2026
  • But the tireless churn of his storytelling, picking up and depositing little clues of what came before, is the mark of an auteur who has barely scratched the surface of his prowess.
    — Matthew Ritchie, Pitchfork, 15 Oct. 2026
Definition of tireless
Adjective
  • The classic free-radical theory of aging, first proposed in the 1950s, held that aging itself resulted from the relentless buildup of ROS in our cells, decade after decade, and the wear and tear this caused.
    — Rowan Jacobsen, Scientific American, 20 Oct. 2026
  • Since 2017, Dulgarian has grown TAGABOW from its placid, solo origins into one of the decade’s most influential and inventive shoegaze bands; the proof is in Lotto, their bold and relentless breakout LP from last year.
    — Abby Jones, Pitchfork, 19 Oct. 2026
Definition of relentless
Adjective
  • Tristan is the ultramarathon of opera roles, long and punishing, and not many tenors carry it off with such unflagging grace.
    — Justin Davidson, Vulture, 11 Mar. 2026
  • The new press release appears to tout that same unflagging punk ethos.
    — Connie Ogle, Miami Herald, 29 Aug. 2025
Definition of unflagging
Adjective
  • The output of such organizations affects everyone, and a conscientious official may reasonably fear that exiting in a crisis will only accelerate it.
    — Eyal Press, New Yorker, 28 Sep. 2026
  • Almost 7% of Tarrant County kindergarteners had a conscientious exemption to at least one vaccine in the 2025-26 school year, up from 3% five years ago, according to state data.
    — Ciara McCarthy, Fort Worth Star-Telegram, 14 Sep. 2026
Definition of conscientious
Adjective
  • Cornell has more than 20 active fraternities affiliated with its Interfraternity Council.
    — Leah Willingham, Los Angeles Times, 13 Oct. 2026
  • Bergen said the brand has always been very active in collaborations and cross-branding.
    — Lisa Lockwood, Footwear News, 13 Oct. 2026
Definition of active
Adjective
  • The legendary French fashion house was making a second issue of its surprisingly vigorous, thick-stock glossy art magazine.
    — Nate Freeman, Vanity Fair, 9 Oct. 2026
  • Brisk walking, light cycling, doubles tennis and household chores such as vacuuming, mopping and mowing the lawn were categorized as moderate activity; vigorous activity included jogging, fast cycling, singles tennis and aerobics.
    — Jennifer Fields, Washington Post, 8 Oct. 2026
Definition of vigorous

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untiring
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Cite this Entry

“Untiring.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/untiring. Accessed 20 Oct. 2026.

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