Careful, prudent, cautious.
Example: "The politician gave a canny response to the reporter's questions."
Knowing, shrewd, astute.
Example: "The canny lawyer knew just how to get what he wanted."
Frugal, thrifty.
Example: "Canny investments"
Pleasant, fair, favorable or agreeable to deal with.
Example: "She's a canny lass hor like!"
Gentle, quiet, steady.
Example: "A canny horse"
(especially of sound) sounding as if it is coming through a tin can.
Very, considerably; quite, rather.
Example: "That's a canny big horse, man!"
Gently, quietly; carefully, skilfully.
Example: "Drive canny"