Definition of adamantine in English:

adamantine

Syllabification: ad·a·man·tine
Pronunciation: /ˌadəˈmanˌtīn, -tin-, -ˌtēn
 
/

adjective

literary
Unbreakable: adamantine chains figurative her adamantine will
More example sentences
  • Here is Prometheus, the rebel: nail him to the rock; secure him on this towering summit fast in the unyielding grip of adamantine chains.
  • They need hope - a kind of unflappable, adamantine hope.
  • I am possessed, as much as the next man, of that stiff upper lip, steely resolve and adamantine backbone which make us British positively megalithic in the face of danger.

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