'adamantine' definitions:
Definition of 'adamantine'
(from WordNet)
adjective
Consisting of or having the hardness of adamant
adjective
Having the hardness of a diamond
adjective
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" [syn: adamant, adamantine, inexorable, intransigent]