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
-
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.
Sources insists a new proposal is yet to be submitted, while Newcastle are adamant that formal club-to-club talks over Guimaraes' protracted switch to north London have not taken place.
From BBC ● Jul. 30, 2026
Riyadh, like Tehran, has long been adamant about its right to pursue a civilian nuclear program.
From Barron's ● Jul. 23, 2026
These answers may give you more clarity on why he is so adamant about buying your specific type of house.
From MarketWatch ● Jul. 17, 2026
On the other hand, is brought out the sumptuous quality Alex Newell’s voice potently making the adamant “Keep Marching” keep marching.
From Los Angeles Times ● Jul. 16, 2026
As she expected, his answer was an adamant no.
From "In the Time of the Butterflies" by Julia Alvarez
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.
