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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And in Season Two, Survival of the Thickest went all out on a dream wedding for Peppermint, an idea Buteau was adamant about making it on screen.
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Advertisement Throughout negotiations, Tehran has been adamant that any cease-fire with Washington must also end the hostilities between Israeli forces and Hezbollah, and that any permanent truce must lead to Israel withdrawing its forces from southern Lebanon.
Adjective
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Dealing with stubborn dark spots?
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But when the adults decide to cancel Christmas and the magical star fades away, a stubborn little bird named Pikkuli sets off on a winter adventure with friends to find the Starlight Reindeer and bring back the light.
Adjective
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The Federal Reserve’s steadfast period of low interest rates in the 2000s was criticized as contributing to a housing bubble in the 2000s, followed by the mortgage crisis of 2007 and the Great Recession the following year.
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With the almighty Sun highlighting your 7th House of Partnership, commitments benefit from structure that includes realistic timelines and steadfast follow-through.
Adjective
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Kimberli Pierce said her husband came home a hardened man.
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Strong integrity, without humility or collaboration, becomes rigidity—as seen in Steve Jobs, whose candor fueled innovation but hardened relationships.
Cite this Entry
“Adamantine.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/adamantine. Accessed 30 Jun. 2026.
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