Knowing (5)
'knowing' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for aware that I've seen before include "Knowing (of something)" , "fly" , "Cognisant, mindful" , "Conscious or having knowledge of" , "Apprised or informed" .)
(Other definitions for canny that I've seen before include "Worldly-wise" , "Astute" , "Shrewd, knowing" , "Fly" , "Shrewd like Scotsman" .)