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
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Example Sentences
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Recent Examples of cast-iron
In a very large cast-iron skillet or on a griddle, heat a thin layer of vegetable oil over high heat.
—
Kelly Brant, Arkansas Online, 17 June 2025
But even without that knowledge, there’s definitely something off here; despite a cast-iron central premise — a desperately lonely young boy seeks a close encounter of the third kind — Elio never quite figures out what to do with it.
—Damon Wise, Deadline, 17 June 2025
Lodge’s cast-iron skillet is pre-seasoned to prevent rusting and is durable enough for stovetop, oven, grill, and campfire use.
—Nashia Baker, Architectural Digest, 17 June 2025
Melt 1/4 cup of the butter in a 12-inch cast-iron skillet over medium.
—Kimberly Holland, Southern Living, 15 June 2025
See All Example Sentences for cast-iron
Kelly Brant, Arkansas Online, 17 June 2025
But even without that knowledge, there’s definitely something off here; despite a cast-iron central premise — a desperately lonely young boy seeks a close encounter of the third kind — Elio never quite figures out what to do with it.
—Damon Wise, Deadline, 17 June 2025
Lodge’s cast-iron skillet is pre-seasoned to prevent rusting and is durable enough for stovetop, oven, grill, and campfire use.
—Nashia Baker, Architectural Digest, 17 June 2025
Melt 1/4 cup of the butter in a 12-inch cast-iron skillet over medium.
—Kimberly Holland, Southern Living, 15 June 2025
See All Example Sentences for cast-iron
Recent Examples of Synonyms for cast-iron
Adjective
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The train itself is powered by energy-efficient DX-class diesel-electric locomotives, and the carrier maintains strict environmental protocols, including waste minimization and recycling practices on board.—
Christopher Elliott,
Forbes.com,
29 June 2025
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Officials accomplished this by re-evaluating risk, putting strict limits on how long a person can be held in isolation and expanding behavioral health programs.—
Kelly Davis,
San Diego Union-Tribune,
29 June 2025
Adjective
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The Gritti’s dock-manager to Grazer’s left, foreground right in the shot, may be suspicious that his sturdy right elbow, offered for support during that parlous little leap from land to sea, is being roundly ignored.—
Guy Martin,
Forbes.com,
1 July 2025
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Persons in campgrounds should consider seeking sturdy shelter until this storm passes.—
CA Weather Bot,
Sacbee.com,
29 June 2025
Adjective
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Every checking account review is based on rigorous reporting by our team of expert writers and editors with extensive knowledge of banking products.—
Mia Taylor,
CNBC,
27 June 2025
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She’s also developed a rigorous skincare routine because her treatments leave her with chemotherapy rash.—
Jillian Frankel,
People.com,
27 June 2025
Adjective
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White Zinnias These hardy flowers from Mexico have had my heart for years; their bold colors simply scream summer.—
Josh Miller,
Southern Living,
21 June 2025
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Even grimmer than this, there's no guarantee that the laws of physics are the same in a baby universe as their parent universe, meaning an unpredictable fate and potentially a messy death for a hardy multinaut able to brave a black hole doorway.—
Robert Lea,
Space.com,
21 June 2025
Adjective
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Unlike rigid anomaly detection models, LLMs have the capability of identifying unknown threats and can reduce false positives significantly.—
Karan Alang,
Forbes.com,
2 July 2025
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The wall, which was built in the late 1990s and is 2,278 feet long, undulates instead of forming a rigid line.—
Jennie Rothenberg Gritz,
Smithsonian Magazine,
1 July 2025
Adjective
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According to research from Everytown for Gun Safety, a nonprofit that advocates for gun control, strong gun control laws are correlated with fewer gun deaths.—
Elliot Hughes,
Journal Sentinel,
13 Jan. 2023
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This results in a charge imbalance that builds up an electric field strong enough to trigger flashes of lightning.—
National Geographic,
National Geographic,
13 Jan. 2023
Adjective
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Former top recruits Roderick Kearney, a stout (6-4, 307) redshirt sophomore able to play guard and center, and towering redshirt freshman tackle Fletcher Westphal (6-8, 336) will push for a spot in the rotation.—
Edgar Thompson,
The Orlando Sentinel,
24 June 2025
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Unlike last year’s 40-38 thriller, both teams struggled to break into the end zone, with the pouring rain adding an additional challenge beyond the stout defensive play.—
Marcello Rossetti,
Boston Herald,
14 June 2025
Cite this Entry
“Cast-iron.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/cast-iron. Accessed 9 Jul. 2025.
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