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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
  • Even so, Mitch said living with Justin is easy, thanks to his meticulous approach to nearly everything.
    — Los Angeles Times, Los Angeles Times, 7 Sep. 2026
  • Instead, the project will be slow and meticulous to ensure no dust or debris falls onto the neighboring railroad tracks which border the mill on all sides.
    — Jenna Ebbers, Kansas City Star, 3 Sep. 2026
Definition of meticulous
Adjective
  • Gloria Steinem, the indefatigable feminist and journalist whose activism revolutionized the personal and professional lives of women, has died.
    — Elizabeth Chuck, NBC news, 3 Sep. 2026
  • 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
Definition of indefatigable
Adjective
  • Neoclouds and other companies leveraged to relentless data center construction also came under pressure.
    — Eva Roytburg, Fortune, 14 Sep. 2026
  • Being a relentless forechecker and reliable defender are his paths to sticking in the NHL after an 11-game taste last season, which showed up Sunday when Sýkora helped force the turnover that led to Greentree’s goal.
    — Vincent Z. Mercogliano, New York Times, 14 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
  • 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
  • Fretting about the future is a favorite preoccupation of the conscientious.
    — Joe Fassler, The Atlantic, 5 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
  • Instead of looking only at raw home prices, an investor can track the rent-to-income ratio and the pending-active listing ratio.
    — Justin Donald, Forbes.com, 15 Sep. 2026
  • Salicylic acid, the same active dermatologists have leaned on for facial acne for decades, is now showing up in 360-degree body mists engineered to hit the places your hands can’t.
    — Hanna Wickes, Fort Worth Star-Telegram, 15 Sep. 2026
Definition of active
Adjective
  • The film is at its most vigorous here, when its possibilities lie ahead.
    — Siddhant Adlakha, Variety, 13 Sep. 2026
  • Water Sprouts These vigorous upright shoots often develop in response to stress or over-pruning.
    — Nadia Hassani, The Spruce, 12 Sep. 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 16 Sep. 2026.

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