Clever sting (5)
I believe the answer is:
smart
I believe this is a double definition.
'clever' is the first definition.
(I've seen this before)
'sting' is the second definition.
(thesaurus)
(Other definitions for smart that I've seen before include "Chic; sting" , "Rankle; trim" , "Clean and stylish" , "astute" , "Bright or dapper" .)