Pretty smart (4)
I believe the answer is:
cute
I believe this is a double definition.
'pretty' is the first definition.
(both can mean attractive)
'smart' is the second definition.
(I've seen this before)
(Other definitions for cute that I've seen before include "Daintily pretty" , "Smart" , "Lovable" , "Small, delightful" , "Quaintly attractive" .)