Stylish ring remains hidden (7)
I believe the answer is:
dashing
'stylish' is the definition.
(thesaurus)
'ring remains hidden' is the wordplay.
'ring' becomes 'ding' (dinging is a kind of ringing**).
'remains' becomes 'ash' (I've seen this before).
'hidden' indicates putting letters inside.
'ding' enclosing 'ash' is 'DASHING'.
(Other definitions for dashing that I've seen before include "Stylish, adventurous" , "Rakish" , "Making haste" , "sprinting" , "Game" .)