cast-iron

adjective

ˈkast-ˈī(-ə)rn How to pronounce cast-iron (audio)
Definition of cast-ironnext
1
as in strict
not allowing for any exceptions or loosening of standards lost weight only after a cast-iron adherence to his diet

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Antonyms & Near Antonyms
2
as in sturdy
able to withstand hardship, strain, or exposure he has a cast-iron faith in his innate ability to overcome any adversity that life might throw against him

Synonyms & Similar Words

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 cast-iron My favorite fish is salmon, and a great way to prepare it is in a cast-iron skillet. — Jennifer Berger, Verywell Health, 22 June 2026 Ready in just 30 minutes, this skillet cookie stars a molten center and crispy edges thanks to being baked a cast-iron skillet. — Lynn Andriani, Martha Stewart, 19 June 2026 Nearby are picnic tables and a sprawling fruit and vegetable garden and cast-iron barbecue pits for grilling — Barack Obama would like you to use those in the summer. — Christopher Borrelli, Chicago Tribune, 14 June 2026 The family replaced cast-iron plumbing, upgraded the electrical and other systems, and restored the brick exterior piece by piece. — David Caraccio, Sacbee.com, 13 June 2026 See All Example Sentences for cast-iron
Recent Examples of Synonyms for cast-iron
  1. strict
  2. sturdy
  3. rigorous
  4. hardy
  5. rigid
  6. strong
  7. stout
Adjective
  • Without stricter coordination, brightness limits, debris controls, disposal rules, and international capacity planning, the next space race could damage the orbital lanes on which modern life now depends.
    — Atharva Gosavi, Interesting Engineering, 6 July 2026
  • Not a whole lot, admittedly, since there was reportedly a strict no-phone policy for guests (as well as event staff and security).
    — Jon Blistein, Rolling Stone, 6 July 2026
Definition of strict
Adjective
  • Be sure to cover your head and neck with your arms, and crawl under a sturdy table if possible.
    — CA Earthquake Bot, Sacbee.com, 6 July 2026
  • For your safety, move to an interior room on the lowest floor of a sturdy building.
    — NC Weather Bot, Charlotte Observer, 4 July 2026
Definition of sturdy
Adjective
  • Every cybersecurity article is based on rigorous reporting by our team of expert writers and editors.
    — Brian Sloan, CNBC, 3 July 2026
  • This improves both customer and agent experience, while still meeting rigorous business standards around accuracy, reliability, and risk management.
    — Forbes.com, Forbes.com, 2 July 2026
Definition of rigorous
Adjective
  • How to Protect Yourself Against Cyclosporiasis The CDC says that the Cyclospora parasite is particularly hardy, so routine rinsing or washing of produce is unlikely to kill it.
    — Jane Yoon Scott, EverydayHealth.com, 7 July 2026
  • For novice growers, Barthel likes to emphasize that cannabis is hardy and fast-growing like a weed.
    — Martha Ross, Mercury News, 6 July 2026
Definition of hardy
Adjective
  • What this recent research on podcast discovery by Sounds Profitable / JAR Research punctuates is that the avenues of finding new podcasts aren’t formalized and rigid, but dependent on age, income, background, and lifestyle.
    — Frank Racioppi, Forbes.com, 7 July 2026
  • Sometimes the eyes are the only thing that changes between spreads, a technique that is especially effective when the characters are rigid reptiles with a limited range of motion.
    — Casey Cep, New Yorker, 7 July 2026
Definition of rigid
Adjective
  • Beyond California, scientists are raising alarms over the planet’s warming oceans, which — coupled with a strong El Niño — could increase temperatures for land dwellers in the coming weeks.
    — Los Angeles Times, Los Angeles Times, 6 July 2026
  • Weather aside, Fall/Winter 2026 Haute Couture Week, running from July 6 to 9, will feature shows from 30 houses, compared with FW25’s 27-strong line-up.
    — Laure Guilbault, Vogue, 6 July 2026
Definition of strong
Adjective
  • La Albiceleste created more chances but could not get past the viral sensation in net or the stout Cape Verdean defense before the halftime whistle blew.
    — Jacob Lev, CNN Money, 3 July 2026
  • All of this came after Florida’s four trades for star forward Brady Tkachuk, starting goaltender Jacob Markstrom, backup goaltender Akira Schmid and fourth-line forward Garnet Hathaway to fortify what on paper was already a stout roster.
    — Jordan McPherson, Miami Herald, 1 July 2026
Definition of stout

Browse Nearby Words

casting (up)
cast-iron
castle
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Cite this Entry

“Cast-iron.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/cast-iron. Accessed 10 Jul. 2026.

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