1. a sudden desire or change of mind, especially one that is unusual or unexplained

Examples

• She bought the expensive dress on a whim.
• His decision to quit his job was just a whim.
• The children were taken to the zoo on their grandmother’s whim.
• He changed his major on a whim during his sophomore year.
• The artist painted whatever caught her whim that day.
• Don’t make important decisions based on a whim.