die-hard

(noun) one who adheres to traditional views. Synonyms: traditionalist, diehard.

(verb) continue to exist. Synonyms: prevail, persist, die hard, run, endure. Examples: "These stories die hard." "The legend of elvis endures."

(adj) tradition-bound and obstinately opinionated. Synonyms: die-hard(prenominal), rock-ribbed. Examples: "An inflexible (or die-hard) conservative." "Rock-ribbed republican."