Synonyms for Stick-in-the-mud:

• n.

  •
  • Drongo,
  • fogey,
  • new,
  • bore,
  • dweeb,
  • anorak,
  • square,
  • dinosaur,
  • fossil,
  • mossback,
  • drip.
  •conservative (noun)
  • old liners,
  • middle-of-the-roaders,
  • middle of the roaders,
  • un-progressive,
  • pre server,
  • bitterenders,
  • un progressives,
  • pre-server,
  • un progressive,
  • standpats,
  • silk-stockings,
  • bitter enders,
  • un-progressives,
  • moderatists,
  • silk stockings,
  • unprogressives,
  • pre servers,
  • pre-servers,
  • bitter-enders,
  • silkstockings,
  • silkstocking,
  • bitterender.
  •diehard (noun)
  • fundamentalists,
  • pullback,
  • true blue,
  • bourbons,
  • praetorians,
  • ultra-conservative,
  • bourbon,
  • standpatter,
  • fundamentalist.
  •fogy (noun)
  • dodos,
  • fossils,
  • old fogey,
  • fogeys,
  • Dodoes,
  • dodo.
  •fogyish (noun)
  • fogyish.
  •fuddy-duddy (noun)
  • grannies,
  • dotards,
  • dull person,
  • fussbudget,
  • old fart,
  • granny,
  • old geezer,
  • old poop,
  • fussy person,
  • fusspots,
  • dotard,
  • old fogy,
  • fusspot,
  • dull people.
  •out of fashion (noun)
  • out of fashion.
  •party pooper (noun)
  • spoilsport,
  • GRINCH,
  • malcontents,
  • killjoy,
  • spoilsports.
  •plodder (noun)
  • plodder.
  •right-winger (noun)
  • right-winger.
  •slowcoach (noun)
  • slowcoach.
  •slowpoke (noun)
  • slowpoke.
  •stodgy (noun)
  • stodgy.
  •unadventurous person (noun)
  • person set in ways,
  • obstinate person,
  • antediluvian,
  • reactionary.
  •unfashionable (noun)
  • unfashionable.
  •unstylish (noun)
  • unstylish.

• Other synonyms:

  •
  • fogy.
  •prig
  • prude,
  • sobersides.

Antonyms for Stick-in-the-mud:

• n.

  • unadventurous person
    radical, progressive, adventurer, liberal.
  • Other antonyms:
    hipster, modern, trendy, fashionable, stylish.