stick-in-the-mud

(noun) someone who moves slowly. Synonyms: plodder, slowpoke, slowcoach. Example: "In england they call a slowpoke a slowcoach."

(adj) (used pejoratively) out of fashion; old fashioned. Synonyms: fogyish, moss-grown, mossy, stick-in-the-mud(predicate), stodgy. Example: "Moss-grown ideas about family life."