DICT.TW Dictionary Taiwan

 stick-in-the-mud /ˈstɪkənðəˌmʌd/
 墨守成規者,保守的人,遲鈍的人(a.)保守的,遲鈍的

 stick-in-the-mud
      adj : (used pejoratively) out of fashion; old fashioned;
            "moss-grown ideas about family life" [syn: fogyish, moss-grown,
             mossy, stick-in-the-mud(p), stodgy]
      n : someone who moves slowly; "in England they call a slowpoke a
          slowcoach" [syn: plodder, slowpoke, slowcoach]