adamant (
http://definr.com/adamant)
adj : not capable of being swayed or diverted from a course;
unsusceptible to persuasion; "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
tendancy" [syn:
adamantine,
inexorable,
intransigent]
n : very hard native crystalline carbon valued as a gem [syn:
diamond]