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
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However, her mother is adamant about keeping the canine off the antique chair.—
Liz O'Connell,
MSNBC Newsweek,
10 Sep. 2025
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Sandlin was adamant that his engineering team has done everything possible to ensure no adverse impact to neighboring properties.—
Matthew Adams,
Fort Worth Star-Telegram,
8 Sep. 2025
Adjective
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Viewers were quick to point out the hilarity of the dog's stubborn protest, with many suggesting that the dachshund had already claimed permanent rights to the bed.—
Melissa Fleur Afshar,
MSNBC Newsweek,
12 Sep. 2025
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The stubborn myth that Jews are too safe to be targets is colliding with a painful new reality.—
Andrew Weinstein,
Time,
12 Sep. 2025
Adjective
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Our administration must remain steadfast in ensuring that those who put in the work receive the benefits of their efforts.—
Ruth Vitale,
Deadline,
10 Sep. 2025
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The engineering professor is steadfast that nearly all jobs will be taken over by AI—even most of the ones that have a special human touch, like teachers and car drivers.—
Emma Burleigh,
Fortune,
9 Sep. 2025
Adjective
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For example, the military's ultra-hardened Advanced Extremely High Frequency satellites in geosynchronous orbit are designed to operate through an electromagnetic pulse and nuclear scintillation.—
Stephen Clark,
ArsTechnica,
11 Sep. 2025
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The hardened sediment largely contained the mineral brucite — created through alkaline waste interacting with magnesium in the ocean water that resulted in the crust-like surface surrounding the barrels.—
Maura Fox,
San Diego Union-Tribune,
11 Sep. 2025
Cite this Entry
“Adamantine.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/adamantine. Accessed 18 Sep. 2025.
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