is similar to
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"
is similar to
tradition-bound and obstinately opinionated
"an inflexible (or die-hard) conservative"; "rock-ribbed republican"
is similar to
set in a rigidly conventional pattern of behavior, habits, or beliefs
"obsolete fossilized ways"; "an ossified bureaucratic system"
is similar to
stubbornly resistant to change or improvement
"hard-core addicts"
is similar to
inflexibly entrenched and unchangeable
"brassbound traditions"; "brassbound party loyalists"; "an ironclad rule"