Main entry: inexorable, intransigent, adamant, adamantine
Definition: impervious to pleas, persuasion, requests, reason
Usage: 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
Main entry: adamantine
Definition: having the hardness of a diamond
Main entry: adamantine
Definition: consisting of or having the hardness of adamant