canny

Concise Oxford English Dictionary © 2008 Oxford University Press:
canny/ˈkani/

▶adjective (cannier, canniest)

• 1 shrewd, especially in financial or business matters.

• 2 N. English & Scottish pleasant; nice.

– derivatives
cannily adverb,
canniness noun.

– origin C16 (orig. Scots): from can1 (in the obs. sense ‘know’) + -y1.