In a stylish or fashionable manner. She dressed smartly for the interview, wearing a tailored suit and polished shoes.
In a quick or brisk manner. He walked smartly down the street, eager to reach his destination.
In a clever or intelligent manner. She smartly solved the puzzle in record time, impressing everyone with her skills.
In a sharp or stinging manner; so as to cause a sudden pain or sensation. The cold wind struck smartly at their faces.