Ritzy (4)
'ritzy' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for posh that I've seen before include "Smart, fashionable" , "Swanky" , "'opulent'" , "'Upper class, accent perhaps (4)'" , "Upper-class; stylish" .)
'ritzy' is the definition.
(thesaurus)
This is the entire clue.