Synset

impervious to pleas, persuasion, requests, reason
<adj.all>   freq. cnt.: 3 freq. cnt.: 2 freq. cnt.: 1

adamant

adamantine

inexorable

intransigent

sample sentences

"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"