Adamantine – Definition & Meaning

The word “adamantine” is not commonly used in everyday conversation, but it is a term that has a very specific meaning. It is often used in literature, poetry, and other forms of artistic expression to describe something that is unbreakable, hard, or unyielding. In this article, we will explore the definition and meaning of adamantine, as well as its origins, associations, synonyms, and antonyms.


The word “adamantine” can be defined in a few different ways, depending on the context in which it is used. Generally speaking, it refers to something that is extremely hard, unbreakable, or unyielding. It can also be used to describe something that is unchanging or steadfast.


The word “adamantine” comes from the Greek word “adamas,” which means “unconquerable” or “untameable.” In ancient times, this word was used to describe a type of rock that was believed to be indestructible. Over time, the word came to be associated with anything that was considered unbreakable or unyielding.

Meaning in different dictionaries

According to the Oxford English Dictionary, the word “adamantine” means “unbreakable, hard, or unyielding.” The Merriam-Webster dictionary defines it as “hard as diamond” or “unyielding or inflexible.” The Cambridge English Dictionary describes it as “extremely hard and strong.”


The word “adamantine” is often associated with strength, durability, and resilience. It is used to describe things that are difficult to break or destroy, such as a diamond or a fortress. It can also be used to describe a person’s character or personality, suggesting that they are steadfast and unchanging in their beliefs or values.


Some synonyms for “adamantine” include unbreakable, indestructible, unyielding, firm, strong, and steadfast.


Antonyms for “adamantine” might include fragile, delicate, weak, or pliable.

The same root words

The word “adamantine” shares its root word with the word “diamond,” which also comes from the Greek word “adamas.” Both words are used to describe something that is hard, unbreakable, or precious.

Example Sentences

Here are a few example sentences that use the word “adamantine”:

  • The fortress was built with adamantine walls that could withstand any attack.
  • Her adamantine will helped her overcome even the toughest challenges.
  • The diamond was so adamantine that no tool could scratch it.
  • His adamantine beliefs made him a formidable opponent in any debate.
  • The company’s adamantine commitment to quality ensured that their products were always top-notch.
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