tireless

adjective

ˈtī(-ə)r-ləs How to pronounce tireless (audio)
Definition of tirelessnext
as in meticulous
showing no signs of weariness even after long hard effort a tireless advocate for human rights

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 tireless In late 2017, with the help of a tireless pro bono lawyer who worked his case for years, Fred was fully and unconditionally pardoned by the state of Nevada. — Megan Rose, ProPublica, 9 Sep. 2026 Just as significant has been his tireless commitment to giving back and supporting the next generation of screen talent through his charitable work and dedication to the industry, including his work with BAFTA. — Georg Szalai, HollywoodReporter, 9 Sep. 2026 Banks, the first saxophonist to receive the prestigious Avery Fisher Award, is a tireless advocate for his instrument in the classical world. — Beth Wood, San Diego Union-Tribune, 16 Aug. 2026 Colleagues say Garcia is a tireless worker at a hotel and a Hell's Kitchen restaurant who never turned down a shift. — Jesse Zanger, CBS News, 10 Aug. 2026 See All Example Sentences for tireless
Recent Examples of Synonyms for tireless
  1. meticulous
  2. indefatigable
  3. relentless
  4. unflagging
  5. conscientious
  6. untiring
  7. active
  8. vigorous
Adjective
  • The glitzy brand, which started with its Singapore flagship in 1887, is known for its meticulous opulence and highly personalized service.
    — Condé Nast, Condé Nast Traveler, 1 Oct. 2026
  • Everett is meticulous and thorough, if eccentric, carefully considering all kinds of little details for his character.
    — Kyle Maclachlan, HollywoodReporter, 29 Sep. 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
  • After years of cruel dismissal from his grandfather, Kang Seung-woon (Jung Jin-young), and relentless pressure from his mother, Kang Ji-hye (Yoon Se-ah), Pi-o doubts his talent.
    — Kayti Burt, Time, 6 Oct. 2026
  • In a time defined by AI acceleration, expanding cybersecurity risks and relentless pressure to grow, organizations can no longer afford leadership models that diffuse responsibility when outcomes fall short.
    — Guy Yehiav, Forbes.com, 5 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
  • 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, 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
Definition of untiring
Adjective
  • Before Kenya reported its case, there had been no active cases outside Congo since Uganda declared its outbreak over in late August.
    — Arkansas Online, Arkansas Online, 7 Oct. 2026
  • In fact, their 2026 Giving Signals Report, conducted with The Harris Poll, pegged millennials as the most active donor generation right now.
    — Sydney Lake, Fortune, 6 Oct. 2026
Definition of active
Adjective
  • By the late 1500s, the once vigorous Ming was severely eroding.
    — Carl Minzner, Foreign Affairs, 5 Oct. 2026
  • Los Angeles Mayor Karen Bass is in the fight of her political life, facing a vigorous challenge from City Councilmember Nithya Raman, a savvy campaigner who was until recently a close ally.
    — Los Angeles Times, Los Angeles Times, 1 Oct. 2026
Definition of vigorous

Browse Nearby Words

tiredness
tireless
tirelessly
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Cite this Entry

“Tireless.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/tireless. Accessed 10 Oct. 2026.

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