adamant
Americanadjective
-
utterly unyielding in attitude or opinion in spite of all appeals, urgings, etc.
- Synonyms:
- uncompromising, rigid, inflexible
-
too hard to cut, break, or pierce.
noun
-
any impenetrably or unyieldingly hard substance.
-
a legendary stone of impenetrable hardness, formerly sometimes identified with the diamond.
adjective
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unshakable in purpose, determination, or opinion; unyielding
-
a less common word for adamantine
noun
-
any extremely hard or apparently unbreakable substance
-
a legendary stone said to be impenetrable, often identified with the diamond or loadstone
Other Word Forms
Etymology
Origin of adamant
First recorded before 900; Middle English, from Old French adamaunt, from Latin adamant- (stem of adamas ) “hard metal (perhaps steel), diamond,” from Greek, equivalent to a- a- 6 + -damant- verbal adjective of damân “to tame, conquer”; replacing Old English athamans (from Medieval Latin ) and Middle English aymont, from Middle French aimant, from unattested Vulgar Latin adimant-, from Latin
Explanation
If you stubbornly refuse to change your mind about something, you are adamant about it. This word's story begins in ancient Greece, where philosophers spoke about a legendary unbreakable stone or metal they called adamas (literally, "invincible"). In English, people began to use the word to refer to something that cannot be altered, and then in the twentieth century — after adamant had been in English for about a thousand years — it came to be used as an adjective to mean "unyielding as stone." If you're adamant about something, no amount of persuasion is going to convince you otherwise.
Vocabulary lists containing adamant
100 SAT Words Beginning with "A"
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300 Most Difficult "SAT" Words
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List 2
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Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
Warsh has also been adamant about reducing Fed communications, and has promised a thorough review encompassing speeches, press conferences, the so-called dot plot of inflation forecasts, and even policy meeting transcripts and minutes.
From Barron's • Jun. 29, 2026
Named The Middle Ale in a play on the chain's famous middle aisle, the company is adamant this is not a stunt.
From BBC • Jun. 17, 2026
“One thing that we’ve really been adamant about is getting the schemes that the coaches put us in and adhering to those schemes,” Nneka Ogwumike said.
From Los Angeles Times • Jun. 8, 2026
She was adamant that she would support him, no matter his decision.
From The Wall Street Journal • Jun. 2, 2026
That’s why Rishi was so adamant about doing exactly what his parents wanted.
From "When Dimple Met Rishi" by Sandhya Menon
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
