Having or showing a deceitful or evasive character. The shifty salesman tried to convince us to buy a car with a questionable history.
Characterized by frequent changes in direction or position. The shifty winds made it difficult for the sailors to maintain their course.
Able to adapt quickly or devise clever means of achieving one's ends; resourceful (now rare). On the frontier you had to be shifty to make a living out of the barren land.