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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Example Sentences
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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.
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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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While the police union is adamant the city needs to provide them raises, some community advocates have spoken out, arguing the police department already takes up a significant amount of the city's budget.—
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And in a now-viral TikTok, Stunna was adamant about denying last-minute plus-ones to his wedding.—
Adjective
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For years, scientists have focused on finding ways to neutralize or eliminate this stubborn waste.—
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That ever-persistent chasm that has existed between white students and those of color in public schools has remained stubborn in Michigan, where more than 18% of Michigan's public school students are Black.—
Adjective
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For 19 years, its dedicated staff and steadfast supporters have provided vital care to over 100,000 young people across southern Africa, including young people living with HIV/AIDS and those facing mental health challenges.—
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After that harrowing hike up the boulder field, the nerve-wracking exposure of our search site has pushed even this steadfast high-drive purebred over threshold.—
Adjective
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Pueblo police began investigating the case in January 2024 after someone called 911 about a suspicious metal container filled with hardened concrete in a storage unit in the 600 block of West Sixth Street.—
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Phrynoderma Vitamin A deficiency can lead to a skin condition called phrynoderma, a type of follicular hyperkeratosis that causes small, hardened bumps on areas of the body such as the shoulders, buttocks, elbows, and knees.—
Cite this Entry
“Adamantine.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/adamantine. Accessed 29 Sep. 2025.
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