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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Officials with the Georgia Department of Transportation have been adamant that many of the major road closures and resurfacing projects are unrelated to the World Cup, and therefore are on a multi-year timeline.—
Irene Wright,
USA Today,
29 May 2026
-
Healthcare advocates are equally adamant.—
Dan Walters,
Mercury News,
28 May 2026
Adjective
-
Grab a melamine sponge and get rid of stubborn bathtub stains in a jiffy.—
Melissa Locker,
Southern Living,
1 June 2026
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If the Avs remain stubborn and play a style that suits their stars in the regular season, MacKinnon might win another title, but will be at the end of his career with another team.—
Troy Renck,
Denver Post,
1 June 2026
Adjective
-
Douglas County remains steadfast in its commitment to transparency and adherence to Colorado Open Meeting laws.—
Olivia Young,
CBS News,
8 June 2026
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The throughline of his life is his on-again, off-again friendship with, but also his steadfast love for a neighbor girl of the upper class, who challenges him repeatedly to become his better self.—
The Know,
Denver Post,
31 May 2026
Adjective
-
Cuban leaders are believed to rely on hardened facilities, underground bunkers, tunnels, decoys, secure compounds and frequent movement.—
Antonio María Delgado,
Miami Herald,
28 May 2026
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That means hardened infrastructure, redundant logistics, jointly developed air and missile defenses, more resilient energy systems, and upgrades to pipelines, ports, rail, and trade routes.—
Daniel Benaim,
Time,
18 May 2026
Cite this Entry
“Adamantine.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/adamantine. Accessed 9 Jun. 2026.
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