Cunning little chap? (3)
I believe the answer is:
art
This clue might be a double definition.
'cunning' is the first definition.
(both can mean trickery)
'little chap?' is the second definition.
'Art' can be an answer for 'chap?'. I'm not certain of the 'little' bit.
Can you help me to learn more?
(Other definitions for art that I've seen before include "Paintings etc." , "Work such as painting or sculpture" , "Trickery" , "Work such as paintings or sculptures" , "Creative works; knack" .)