CAST-IRON Synonyms: 155 Similar and Opposite Words

cast-iron

adjective

ˈkast-ˈī(-ə)rn

Definition of cast-iron

as in strict

not allowing for any exceptions or loosening of standards lost weight only after a cast-iron adherence to his diet

Synonyms & Similar Words

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Antonyms & Near Antonyms

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 Constructed from heavy-gauge cast iron, each piece provides top-notch heat retention and even heat distribution for consistent cooking results—just like similar, pricier cast-iron cookware. — Michele Laufik, Martha Stewart, 28 Sep. 2026 This could mean discovering rodents had damaged wiring or realizing the original cast-iron plumbing has deteriorated. — Valerie Mesa, PEOPLE, 23 Sep. 2026 There are leafy views from the bedrooms and plenty of room to stretch out, and the windowed bathroom feels classic with the cast-iron soaking tub. — Matthew Sedacca, Curbed, 21 Sep. 2026 Neither its stainless-steel peaks nor its ceramic nonstick valleys will develop a seasoning in the same way a carbon steel or cast-iron pan would. — Wilder Davies, Bon Appetit Magazine, 17 Sep. 2026 See All Example Sentences for cast-iron

Recent Examples of Synonyms for cast-iron

Adjective

Anthropic wants Congress to set strict limits on when federal authorities can stop advanced AI models from reaching users.

— Aamir Khollam, Interesting Engineering, 17 Oct. 2026
France, unlike the United States, places strict limits on campaign spending, but money still shapes the broader political ecosystem.

— Nicholas Bequelin, Time, 16 Oct. 2026

Definition of strict

Adjective

The shoes balanced on a slender yet sturdy stiletto heel measuring around three inches.

— Karla Rodriguez, Footwear News, 16 Oct. 2026
The result has been sturdy economic growth, even as lower-income and even middle-income households have continued to struggle under stubborn inflation and declining earnings.

— Rob Wile, NBC news, 15 Oct. 2026

Definition of sturdy

Adjective

Finally, Horrigan noted that inbound freight deserves the same rigorous management as outbound, stressing that procurement teams need visibility into the freight component of supplier pricing.

— Glenn Taylor, Footwear News, 14 Oct. 2026
The whole piece is about the free and rigorous interplay of line.

— Zachary Fine, New Yorker, 14 Oct. 2026

Definition of rigorous

Adjective

Although generally hardy, the plant is susceptible to certain diseases, including anthracnose and bacterial soft rot, as well as pests such as spider mites, caterpillars, and whiteflies.

— Encyclopedia Britannica, Encyclopedia Britannica, 9 Oct. 2026
Cold-hardy brassicas like kale only need to be covered when temperatures fall to 26 to 28°F, and light frosts potentially make these veggies taste better and sweeter.

— Lauren Landers, Better Homes & Gardens, 5 Oct. 2026

Definition of hardy

Adjective

Detours and shortcuts in the brain The cells and synapses of the brain aren’t arranged in rigid, linear paths for each task and experience.

— Sean Mccabe, Hartford Courant, 18 Oct. 2026
That potentially allows rigid structural elements and softer, flexible sections to be incorporated into the same object, provided the materials are compatible.

— New Atlas, New Atlas, 17 Oct. 2026

Definition of rigid

Adjective

But zest was one of just two strengths (the other is hope) that had the strongest relationship to mental well-being across countries and age groups.

— Joan M. Cook, Time, 17 Oct. 2026
However, some safety advocates and Senator Maria Cantwell want a stronger federal review process.

— Aamir Khollam, Interesting Engineering, 17 Oct. 2026

Definition of strong

Adjective

Atlanta is playing without Za'Darius Smith, the team leader with 2 1/2 sacks who suffered a concussion/neck injury in Week 4, but its pass rush remains stout.

— AJC.com, AJC.com, 12 Oct. 2026
Patterson, a Hall of Fame coach known for stout defenses, was supposed to help Riley address the Trojans’ biggest weakness, but the turnaround hasn’t been swift or smooth.

— Jordan Puente, Los Angeles Times, 10 Oct. 2026

Definition of stout

Browse Nearby Words

casting (up)

cast-iron

castle

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Cite this Entry

Style

“Cast-iron.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/cast-iron. Accessed 19 Oct. 2026.

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Synonyms of cast-iron

adjective

Example Sentences

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