having or showing vigorous vegetal or animal life; "flourishing crops"; "flourishing chicks"; "a growing boy"; "fast-growing weeds"; "a thriving deer population"
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"