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 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 Yukov was known for his tireless efforts to bring closure to the families of those killed in the war. — Scott Neuman, NPR, 8 Aug. 2026 Key steps include leveraging AI to proactively answer all buyer questions, then building a comprehensive sales page that acts as a tireless salesperson. — Jodie Cook, Forbes.com, 29 July 2026 As well as his dazzling talent, supporters loved the tireless work rate and enthusiasm of their No 7. — James Pearce, New York Times, 22 July 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
  • This discovery highlights the crucial need for meticulous AI persona creation to prevent skewed data.
    — Lance Eliot, Forbes.com, 30 Aug. 2026
  • Plan Your Route Remote 4x4 travel in Iceland requires meticulous logistical planning.
    — Gwen Nicol, Travel + Leisure, 29 Aug. 2026
Definition of meticulous
Adjective
  • San Francisco Playhouse is currently presenting the musical, helmed by company artistic director Bill English (with Phaedra Tillery-Boughton credited as associate director) and starring Ella Ruth Francis as the indefatigable dreamer Tracy Turnblad.
    — Randy McMullen, Mercury News, 27 Aug. 2026
  • And while Foy is appealing as the indefatigable mother, Garfield leans too heavily into manic cutesiness as the endlessly chirpy father who at times seems less grown-up than his children.
    — Frank Scheck, HollywoodReporter, 20 Aug. 2026
Definition of indefatigable
Adjective
  • The problem is that the action becomes so relentless, so explicitly gory, that a bad aftertaste sets in.
    — Frank Scheck, HollywoodReporter, 2 Sep. 2026
  • As for Jang Geon-young, the relentless prosecutor at the center of Season 1, his fate is left as a mystery.
    — Ophélie Surcouf, Variety, 2 Sep. 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
  • This focus on elevated yet conscientious materials is reflected in designers’ latest choices.
    — Angela Velasquez, Footwear News, 27 Aug. 2026
  • Less so is the fact that more vulnerabilities are being discovered by bounty hunters assisted by AI tools, leaving Google fighting a battle to patch them before less conscientious hackers find them and put them to criminal use.
    — Davey Winder, Forbes.com, 21 Aug. 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
  • The Angels have not made the postseason since 2014, the longest active postseason drought in the majors, and have not won a playoff game since 2009, two years before Trout reached the majors.
    — Fabian Ardaya, New York Times, 2 Sep. 2026
  • Burnham, a former lawmaker who was elected to Parliament in June after almost a decade away as mayor of Greater Manchester, is set to make a statement in the House of Commons setting out his vision of a more active but less centralized state.
    — ABC News, ABC News, 1 Sep. 2026
Definition of active
Adjective
  • Paramasivam’s death has fueled a vigorous protest campaign by the Commercial and Industrial Workers Union, Asia Floor Wage Alliance, Global Labor Justice and other groups.
    — Jasmin Malik Chua, Footwear News, 2 Sep. 2026
  • Puppies should not engage in vigorous tug-of-war games because too much tugging can create jaw or bite problems.
    — BestReviews, Chicago Tribune, 25 Aug. 2026
Definition of vigorous

Browse Nearby Words

tiredness
tireless
tirelessly
See all Nearby Words

Cite this Entry

“Tireless.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/tireless. Accessed 5 Sep. 2026.

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