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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As such, Mahomes evidently not only is immune to complacency but actually has become more adamant with success.—
Kansas City Star,
Kansas City Star,
4 Sep. 2025
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After taking a year off to improve his health, Renfrow was adamant about playing for the Panthers.—
DIAMOND VENCES,
Charlotte Observer,
3 Sep. 2025
Adjective
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Of all the bad-hair-day culprits, matted hair can be the most stubborn and frustrating.—
Grace McCarty,
Glamour,
5 Sep. 2025
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Spills can be blotted (never rubbed) with a dry cloth since the fabric is non-absorptive, and for more stubborn stains, dry cleaning is recommended.—
Zoë Sessums,
Architectural Digest,
4 Sep. 2025
Adjective
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Labyrinth’s themes, characters, and evocative visual artistry remain a steadfast inspiration for artists of all mediums.—
Logan Karlie
September 2,
Literary Hub,
2 Sep. 2025
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Alan, equally steadfast in his conviction, sees the model as both economic and morally justified.—
Okla Jones,
Essence,
30 Aug. 2025
Adjective
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Tren de Aragua originated more than a decade ago at an infamously lawless prison with hardened criminals in Venezuela’s central state of Aragua.—
Aamer Madhani,
Chicago Tribune,
2 Sep. 2025
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By breeding Florida’s hardened survivors with Honduran corals, the scientists hope to create offspring that will carry a new heat-resistant genetic armor for the climate battles ahead.—
Denise Hruby,
Miami Herald,
29 Aug. 2025
Cite this Entry
“Adamantine.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/adamantine. Accessed 9 Sep. 2025.
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