stick in the mud

Definitions

1. A person unwilling to participate in activities; a curmudgeon or party pooper.
   derogatory, idiomatic
2. More generally, one who is slow, old-fashioned, or unprogressive; an old fogey.
   derogatory, idiomatic

Equivalents

Examples

“Have⟳ a little fun sometimes and don't be such a stick-in-the-mud.”

“"I don't hold⟳ back like⟳ you do. Even Tedd's dad can tell⟳ you're a stick-in-the-mud. That's why he made you the supervisor of this party."”

“There’s a parallel here: the idea of Barbie dolls being in any way noxious seems, in the current climate, to be as hopelessly stick-in-the-mud a stance as the concept of selling out.”

CEFR level