mossback (n.)

• antediluvian
• antique
• backwoodsman
• bumpkin
• clodhopper
• conservationist
• conservative
• dad
• diehard
• dodo
• elder
• fogy
• fossil
• fud
• fuddy-duddy
• granny
• has-been
• hayseed
• hick
• hillbilly
• matriarch
• old-timer
• patriarch
• pop
• pops
• provincial
• reactionary
• relic
• right-winger
• rightist
• square
• starets
• stick-in-the-mud
• traditionalist
• ultraconservative
• yokel