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
  • Each of the elements these folks have contributed, whether a dedicated musical score, meticulous floral arrangements, or a global food profile, has merged to make this project feel singular and special.
    — Condé Nast, Condé Nast Traveler, 9 Oct. 2026
  • These meticulous services have a reputation for yielding flawless-looking nails that last for weeks, converting people all over the globe.
    — Lucy Abbersteen, Allure, 9 Oct. 2026
Definition of meticulous
Adjective
  • 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
  • Massi is an indefatigable presence on this boat, one of the most competent workers this franchise has ever seen.
    — Rafaela Bassili, Vulture, 22 Sep. 2026
Definition of indefatigable
Adjective
  • The rescue dog’s tireless work to serve others has earned him an ASPCA Humane Award.
    — Kelli Bender, PEOPLE, 2 Oct. 2026
  • Candela, who finished with nine digs, three service points and an ace, served three straight points to give the Mustangs a 7-3 lead and continued her tireless defense throughout the set.
    — Matt Le Cren, Chicago Tribune, 1 Oct. 2026
Definition of tireless
Adjective
  • The relentless spread of energy-hungry data centers is pushing demand higher still.
    — Philip H. Gordon, Foreign Affairs, 12 Oct. 2026
  • The 16-track set is a truly thrilling journey through the relentless ambition and restless psyche of a young Black woman who’s dedicated her life to navigating the notoriously tumultuous music industry.
    — Kyle Denis, Billboard, 12 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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untired
untiring
untiringly
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Cite this Entry

“Untiring.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/untiring. Accessed 14 Oct. 2026.

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