CAST-IRON Synonyms: 155 Similar and Opposite Words

cast-iron

adjective

ˈkast-ˈī(-ə)rn

Definition of cast-iron next

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

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

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 The family room offers three walls of windows, a fireplace with an authentic late-1800s cast-iron facade, granite mantel and a polished nickel and crystal drum chandelier. —

Saleema Syed, Chicago Tribune, 21 Apr. 2026 The kitchen had two notable features—a big cast-iron woodstove on which everything was cooked, and a dishwasher that stood up like a blockhouse, designed to receive trays two feet by two with wire-mesh bottoms and sides four inches high. —

John McPhee, New Yorker, 20 Apr. 2026 Heat the oil in a large cast-iron or ovenproof skillet. —

Lynda Balslev, Mercury News, 14 Apr. 2026 The White House wants a cast-iron commitment that Iran won’t build a nuclear weapon. —

Nic Robertson, CNN Money, 12 Apr. 2026 See All Example Sentences for cast-iron

Recent Examples of Synonyms for cast-iron

Adjective

Our justice system depends on public confidence, and, as a result, the rules governing lawyers in every state are strict.

— The New Yorker, New Yorker, 4 May 2026
Passengers on board — representing more than 20 nationalities, including Americans — have been placed under strict health monitoring and isolation protocols as a precaution.

— Antonio María Delgado, Miami Herald, 4 May 2026