A facial expression characterized by an upward curving of the corners of the mouth and indicating pleasure, amusement, or derision. A pleasant or favorable disposition or aspect. To have or form a smile. To look with favor or approval: Fortune smiled on our efforts. To express cheerful acceptance or equanimity: We smiled at the bad weather and kept going. To express with a smile: Grandmother smiled her consent. To effect or accomplish with or as if with a smile.