Intelligent like Sting? (5)
I believe the answer is:
smart
I believe this clue is a double definition.
'intelligent' is the first definition.
(similar in meaning)
'sting?' is the second definition.
(I know that sting is a more specific form of the action smart)
'like' is the link.
(Other definitions for smart that I've seen before include "Chic; sting" , "Sting - witty" , "Neat, tidy; sting" , "Neat - clever" , "Intelligent; clean, tidy" .)