as in adamant
sticking to an opinion, purpose, or course of action in spite of reason, arguments, or persuasion
the adamantine opposition of his parents to his marriage to a girl from a poor family
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Recent Examples of adamantine
Still, Naz, whose solitary ways confuse his family, very much wishes that Aziza wasn’t meeting his adamantine mother, Claudine (LaTanya Richardson Jackson), or his famous father, or his ex-state-senator older brother, Junior (Glenn Davis), recently incarcerated for embezzling campaign funds.
—
Helen Shaw, The New Yorker, 20 Mar. 2025
Image My first collision with the adamantine wall of Vivamayr house rules coincided with my arrival.
—Caity Weaver, New York Times, 25 Jan. 2025
Although Bush and Obama both flirted with what was once called entitlement reform, Trump and Biden now present themselves as adamantine defenders of Social Security and Medicare, each accusing the other of secretly aiming to cut those programs.
—Matthew Karp, Harper's Magazine, 2 Oct. 2024
This poor little deer had to be sacrificed by your adamantine reviewer to show you how the new tool works.
—PCMAG, 30 May 2024
At the Guggenheim Bilbao, at Glenstone, at SF MoMA and in St. Louis — in so many places around the world — Serra’s adamantine sculptures act on you.
—Sebastian Smee, Washington Post, 27 Mar. 2024
So contrary to what Gordon suggests, effective teaching, as Weber saw it, involves much more than pitting students’ opinions against adamantine facts.
—Peter E. Gordon, The New York Review of Books, 19 Nov. 2020
This view is much in vogue today, casting China not as a country that responds to pressure and incentives but as an adamantine force incapable of reacting to external stimuli.
—Julian Gewirtz, Foreign Affairs, 13 Oct. 2020
Helen Shaw, The New Yorker, 20 Mar. 2025
Image My first collision with the adamantine wall of Vivamayr house rules coincided with my arrival.
—Caity Weaver, New York Times, 25 Jan. 2025
Although Bush and Obama both flirted with what was once called entitlement reform, Trump and Biden now present themselves as adamantine defenders of Social Security and Medicare, each accusing the other of secretly aiming to cut those programs.
—Matthew Karp, Harper's Magazine, 2 Oct. 2024
This poor little deer had to be sacrificed by your adamantine reviewer to show you how the new tool works.
—PCMAG, 30 May 2024
At the Guggenheim Bilbao, at Glenstone, at SF MoMA and in St. Louis — in so many places around the world — Serra’s adamantine sculptures act on you.
—Sebastian Smee, Washington Post, 27 Mar. 2024
So contrary to what Gordon suggests, effective teaching, as Weber saw it, involves much more than pitting students’ opinions against adamantine facts.
—Peter E. Gordon, The New York Review of Books, 19 Nov. 2020
This view is much in vogue today, casting China not as a country that responds to pressure and incentives but as an adamantine force incapable of reacting to external stimuli.
—Julian Gewirtz, Foreign Affairs, 13 Oct. 2020
Recent Examples of Synonyms for adamantine
Adjective
-
Norma Padgett Upshaw, who remained adamant that the four men were the ones involved in her assault, died in 2024.—
News Service Of Florida,
The Orlando Sentinel,
13 Feb. 2026
-
Suleyman’s vision for Microsoft Suleyman is adamant about the technology’s potential.—
Jake Angelo,
Fortune,
13 Feb. 2026
Adjective
-
One person refuses to bow — not an army, not a revolution, one stubborn Jew minding his own business — and Haman cannot function.—
Rabbi Bruce D. Forman,
Sun Sentinel,
17 Feb. 2026
-
Scrub gently with a soft sponge or brush, focusing on stubborn areas.—
Louise Parks,
Martha Stewart,
17 Feb. 2026
Adjective
-
Swift's more recent looks oscillate between retro-glam styles and timeless, polished looks aligned with a movement toward quiet luxury trends—though her now-iconic bangs remain a steadfast companion.—
Calin Van Paris,
InStyle,
16 Feb. 2026
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Now running for Texas Comptroller of Public Accounts after serving in the Legislature for almost two decades, Kelly is ready to put his experience and steadfast values to work protecting taxpayers and keeping Texas state government strong, prosperous, and accountable.—
Eleanor Dearman,
Fort Worth Star-Telegram,
14 Feb. 2026
Adjective
-
This puts it safely within the light cruise missile-grade of loitering munitions, suggesting it is probably intended for use against hardened or high-value targets.—
Christopher McFadden,
Interesting Engineering,
4 Feb. 2026
-
Fabric layers mesh and bond; glass pellets, mother-of-pearl beads, and cables get nestled into crevices, trapped under hardened strata of varnish.—
Theo Belci,
Artforum,
1 Feb. 2026
Cite this Entry
“Adamantine.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/adamantine. Accessed 20 Feb. 2026.
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