stick–in–the–mud

stick–in–the–mud /ˈstÉŖkənĆ°É™ĖŒmʌd/ noun
plural stick–in–the–muds
stick–in–the–mud
/ˈstÉŖkənĆ°É™ĖŒmʌd/
noun
plural stick–in–the–muds
Britannica Dictionary definition of STICK–IN–THE–MUD
[count] informal + disapproving
: someone who has old-fashioned ideas or who does not like trying new or exciting things