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Definition of 'adamantine'


  1. consisting of or having the hardness of adamant
  2. having the hardness of a diamond
  3. impervious to pleas, persuasion, requests, reason; "he is adamant in his refusal to change his mind"; "Cynthia was inexorable; she would have none of him"- W.Churchill; "an intransigent conservative opposed to every liberal tendency"
       Synonyms: adamant inexorable intransigent

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