as in meticulous
showing no signs of weariness even after long hard effort
an indefatigable laborer who can work from sunrise to sunset
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Recent Examples of indefatigable
That indefatigable cheerfulness, even when describing scenes that sound brutal to almost anyone else, ran through the entire interview.
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Eva Roytburg, Fortune, 5 Dec. 2025
Tammie Rosen, beloved film festival mainstay, indefatigable publicist, absolutely devoted Bruce Springsteen fan, and friend to so many in the indie film world, has passed away after a battle with cancer.
—Kate Erbland, IndieWire, 3 Dec. 2025
Hands-down one of the most disgusting movies ever made (a compliment), the film finds the indefatigable slasher, who was decapitated at the end of Terrifier 2, reattaching his head and commencing his ritual slaughters.
—Declan Gallagher, Entertainment Weekly, 31 Oct. 2025
This year, the indefatigable founder and principal designer of his eponymous brand marks 40 years in the business at a time when his reimagined vision for preppy is resonating with both his loyal fans and a new crop of Gen Z consumers.
—Katie Abel, Footwear News, 23 Oct. 2025
See All Example Sentences for indefatigable
Recent Examples of Synonyms for indefatigable
Adjective
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The most meticulous work on this subject was carried out by David Noble, a historian of technology.—
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Ramon is known for making meticulous in-court analyses for bail and custody decisions.—
Adjective
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In the meantime, however, the tireless work of humanitarians continues on the ground, with no end to the fighting in sight.—
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Democratic Senator Chris Van Hollen praised Hoyer's tireless dedication to passing Democratic priorities and his commitment to racial and social justice.—
Adjective
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The relentless Chacon lurched outside after her just as his car door opened and out popped their 6-year-old son, begging his dad to stop.—
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Czechia had trouble handling a relentless Sweden forecheck and tight coverage all over.—
Adjective
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Joe was a philanthropist, a community leader, and an unwavering and untiring supporter of the U.S. Military and his country.—
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Speeches Malcolm X was known as an articulate speaker, charismatic person, and an untiring organizer.—
Adjective
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The new press release appears to tout that same unflagging punk ethos.—
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Rafael, a trans man learning to accept his own body, and Carolina, his unflagging companion, set off to Chile to secure Rafael’s sense of acceptance – his of self and his family’s.—
Adjective
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Bindi’s only six years older, but is very conscientious and a real caregiver.—
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There are unanswered overtures from the choir’s pianist Horner (Robert Emms), a soft, vulnerable young man whose conscientious-objector status renders him a fellow outsider.—
Adjective
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Such a wellspring of material is seemingly inexhaustible, though the show strains a bit when working to match the festival shooting as a crucible that pushes its cast to the breaking point.—
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Beyond its thriving market, Spain remains an inexhaustible creative force.—
Adjective
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Started from seed, this type of sedum is a vigorous grower, forming a tidy mound with strong, flop-free stems.—
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But a new study, published in Nature Communications in October, says vigorous activity is even more valuable than that.—
Cite this Entry
“Indefatigable.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/indefatigable. Accessed 12 Jan. 2026.
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