adamantine

[ ad-uh-man-teen, -tin, -tahyn ]

adjective

1. utterly unyielding or firm in attitude or opinion.
2. too hard to cut, break, or pierce.
3. like a diamond in luster.

adamantine

/ ˌædəˈmæntaɪn /

adjective

1. very hard; unbreakable or unyielding
2. having the lustre of a diamond

Word History and Origins

Origin of adamantine¹

First recorded in 1200–1250; Middle English, from Latin adamantinus, from Greek adamántinos adamant, -ine ¹

Example Sentences

Each bound to the other, through all the vicissitudes of life, in adamantine bonds of love and admiration!

From Project Gutenberg

The Jew is the dreamer in action, combining fluid imagination with adamantine purpose.

From Project Gutenberg

This electronic device Nick had stolen to operate the three ponderous triple-fold gates of adamantine, brass and iron.

From Project Gutenberg

Moreover, the Hostel's point of view on the subject was as adamantine as it was universal.

From Project Gutenberg

Watching us over the adamantine walls and all that kind of thing.

From Project Gutenberg