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 Technically gifted, fearless, tireless, and always ready to fight for the badge. — Tim Spiers, New York Times, 30 June 2026 For human crews, this transformation removes them from hazardous sparks and toxic fumes, shifting their roles from manual laborers to supervisors of a faster, tireless robotic workforce. — Mrigakshi Dixit, Interesting Engineering, 15 June 2026 From playing for his teammates and father, to a tireless work ethic, the 5-foot-5 Kim delivers powerful drives to complement his short game. — Dan Albano, Oc Register, 12 June 2026 Orlando Senna, a high-energy, tireless and charming Brazilian filmmaker, playwright, writer and cultural activist, died June 9 from pneumonia in Rio de Janeiro. — John Hopewell, Variety, 11 June 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
  • Well, Apple’s meticulous planning means previous years can give us clues as to what will happen when.
    — David Phelan, Forbes.com, 10 July 2026
  • Because of the tapestry’s fragility, the transfer required meticulous planning.
    — Tiago Ventura, Time, 10 July 2026
Definition of meticulous
Adjective
  • Walter would become my indispensable, indefatigable partner in every endeavor that followed.
    — Bill Frist, Forbes.com, 30 June 2026
  • The audience and the other participants go to great lengths each season to insure the safety of the few indefatigable girls who impress us with their authenticity and make full use of their latitude to become tragic heroines.
    — Lillian Fishman, New Yorker, 27 June 2026
Definition of indefatigable
Adjective
  • The relentless rain has led to dozens of water rescues in the region and forecasters are warning of more rainfall that could be catastrophic.
    — Mary Gilbert, CNN Money, 15 July 2026
  • Between a home with three young children and a pediatric clinic crowded with restless kids, the noise at times felt relentless.
    — Dana Suskind, Time, 14 July 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 exhibition’s framing of Hamdi as the conscientious Orientalist feels slyly designed to disarm judgment of his work, and even to neutralize his professional misdeeds.
    — Zachary Fine, New Yorker, 13 July 2026
  • Earth-friendly, conscientious gardeners learn to slow down and pay attention — not only to plants but to the many creatures that share the garden.
    — Rita Perwich, San Diego Union-Tribune, 4 July 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
  • Unlike then, however, there has been no active conflict within the country’s borders during this spate of violence.
    — Issy Ronald, CNN Money, 14 July 2026
  • These effects reflect what’s currently active in the mind, not necessarily hidden or repressed thoughts.
    — Karen Stollznow, The Conversation, 14 July 2026
Definition of active
Adjective
  • Nolan advances his vision, however crowd-pleasing and anachronistic, with vigorous confidence and unimpeachable clarity.
    — Richard Brody, New Yorker, 15 July 2026
  • Especially in containers and hanging baskets, regular fertilizing is essential for keeping petunias blooming and vigorous all summer long.
    — Andy Wilcox, Better Homes & Gardens, 14 July 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 18 Jul. 2026.

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Nglish: Translation of tireless for Spanish Speakers

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