1. stick-in-the-mud - Noun
2. stick-in-the-mud - Adjective Satellite
(used pejoratively) out of fashion; old fashioned
Source: WordNetstick in the mud
I swear, Oliver, when did you become such a stick-in-the-mud?” "I've always been a stick-in-the-mud.” Her brother cast her a thin smile. "I just hid it beneath all the debauchery.” She sniffed. "I wish you'd hide it again. It's quite annoying. Sabrina Jeffries
moss-grown ideas about family life Source: Internet