stick–in–the–mud

a person with old-fashioned ideas the committee is dominated by old stick-in-the-muds who have little interest in bringing new ideas to the table Synonyms antediluvian, Colonel Blimp, dodo, fossil, fud, fuddy-duddy, mossback, reactionary, stick-in-the-mud, stuffed shirtRelated Words conservative, rightist, Tory; mandarin, old hand, old-timer, veteran; old maidNear Antonyms liberal, progressive, radicalAntonyms hipster, modern, trendy