IRONCLAD Synonyms: 107 Similar and Opposite Words

ironclad 1 of 2

adjective

Definition of ironclad

as in powerful

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Dissimilar Words

ironclad

2 of 2

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 ironclad

Adjective

Watson, who continues to deny any wrongdoing, has not earned a dollar of his ironclad contract and hasn’t at all looked like an NFL quarterback, especially during that Saturday make-believe matchup against the Buffalo Bills. — Candace Buckner, New York Times, 25 Aug. 2026 Everyone has a plan, sure, and sometimes an ironclad belief in their motivations for that plan, but something always twists itself into a messy little knot in the execution. — Brian Grubb, Vulture, 10 Aug. 2026

Noun

Bound by ironclad nondisclosure agreements, Madison reveals that Facebook leadership was well aware of the platform’s harmful effects on teens — and its knowing proliferation of misinformation, which contributed to acts of political violence. — Matt Donnelly, Variety, 14 Apr. 2026 The ironclad’s tenure at sea was short-lived, however. — Andrew Paul, Popular Science, 11 Mar. 2026 See All Example Sentences for ironclad

Recent Examples of Synonyms for ironclad

Adjective

Pacific Fusion also aims to create a fusion reaction an order of magnitude more powerful than those at the national lab facilities.

— Sarah Scoles, Scientific American, 20 Oct. 2026
Zuckerberg and Wang want Muse Wonder and the more powerful Muse Wonder Full to drive Muse, Meta’s personal AI agent, which can act on people’s behalf.

— Molly A. Wallace, Fortune, 20 Oct. 2026

Definition of powerful

Noun

The ships also represent a major investment in Britain’s maritime industrial base, drawing on expertise in naval engineering, aviation support and complex warship construction.

— Prabhat Ranjan Mishra, Interesting Engineering, 14 Oct. 2026
North Korea has intensified tensions with a series of military displays this month, including short-range ballistic missile launches, live-fire missile and artillery exercises, and the commissioning of a new warship.

— ABC News, ABC News, 28 Sep. 2026

Definition of warship

Adjective

In some obscure way, Shawn felt responsible for protecting the stranger against the slights of his unyielding countrymen.

— Rachel Heng, New Yorker, 4 Oct. 2026
His unyielding tongue-in-cheek career narrative touches on craftsmanship, luxury and nihilism.

— Rosemary Feitelberg, Footwear News, 10 Sep. 2026

Definition of unyielding

Noun

Passenger boats have not passed through these parts since the days of the steamship petered all the way out some 60 years ago.

— Charlie Hobbs, Condé Nast Traveler, 17 Sep. 2026
The paperboard card could be used to buy airline, steamship and cruise tickets, but the balance had to be paid in full each month.

— USA Today, USA Today, 15 Sep. 2026

Definition of steamship

Adjective

Smesko — who went 611-112 at FGCU and won 25 games in each of his last 14 seasons there, a run matched by only mighty Geno Auriemma and UConn in that span — took the leap into the pro world.

— ABC News, ABC News, 15 Oct. 2026
The curators, David Breslin and Brinda Kumar, don’t accomplish this with appeals to timeliness or relevance but with a mighty selection of pieces—more than a hundred and twenty, from eighty-two different institutions—and smart exhibition design.

— Zachary Fine, New Yorker, 14 Oct. 2026

Definition of mighty

Noun

Strong demand for oil, particularly from Asia, continues to provide an incentive for tanker operators to transport energy supplies from the Persian Gulf, even as security threats complicate voyages.

— Lee Ying Shan, CNBC, 16 Oct. 2026
Smaller ships occupied other berths, and one tanker was loading at an offshore mooring, with a UAE naval corvette standing guard nearby.

— semafor.com, semafor.com, 16 Oct. 2026

Definition of tanker

Adjective

Kansas City is investigating how one of its solid waste trucks struck a bicyclist over the weekend, leaving the rider with life-threatening injuries.

— Dylan Lysen, Kansas City Star, 14 Oct. 2026
The Packers themselves have been solid as a team offensively, but notably rank dead last in the league in rushing yards.

— Jonathan Rubin, Charlotte Observer, 14 Oct. 2026

Definition of solid

Browse Nearby Words

ironbound

ironclad

ironclads

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Cite this Entry

Style

“Ironclad.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/ironclad. Accessed 21 Oct. 2026.

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Synonyms of ironclad

adjective

noun

Example Sentences

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