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
During Vargas Llosa’s lifetime, his political beliefs underwent extreme changes, from supporting Castro’s revolutionary Communism to championing traditional European liberalism, which included an adamantine belief in unregulated markets.
—
Literary Hub, 26 Feb. 2026
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
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
Literary Hub, 26 Feb. 2026
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
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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Board president Kevin Smith said the poll workers took the correct actions with the adamant voter and Thursday’s board vote corrected his attempt to vote a second time.—
Alexandra Kukulka,
Chicago Tribune,
14 May 2026
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And Meg [Marinis] was very adamant.—
Jackie Strause,
HollywoodReporter,
13 May 2026
Adjective
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David Paul Morris / Bloomberg via Getty Images Are Americans finally starting to feel the strain of soaring gas prices and stubborn inflation?—
Elizabeth Robinson,
NBC news,
19 May 2026
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Treasury yields have gone up in recent months as stubborn inflation reduces the likelihood of Fed rate cuts, Pisula notes, while geopolitical tensions add more long-term risk to rates.—
Tim Maxwell,
CBS News,
19 May 2026
Adjective
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Amid the uncertainty, however, Missouri Republican officials remain steadfast in their belief that the new map is in effect.—
Kacen Bayless,
Kansas City Star,
18 May 2026
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Because Aaron Rai is not Aaron Rai without a steadfast resistance to change.—
Gabby Herzig,
New York Times,
18 May 2026
Adjective
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Shockwave makes a catheter that emits localized sonic pressure waves to crack hardened plaque in arteries.—
George Avalos,
Mercury News,
15 May 2026
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Technology challenges Both these systems are aimed at delivering strategic strike capability for neutralizing high-value, time-sensitive targets such as hardened command and control nodes, integrated air defense systems, and critical infrastructure facilities.—
adityajadhav,
Interesting Engineering,
14 May 2026
Cite this Entry
“Adamantine.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/adamantine. Accessed 21 May. 2026.
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