1. the quality or state of being rapid; swiftness of motion or action

Examples

• The rapidity of technological change has surprised many experts.
• She typed with remarkable rapidity and accuracy.
• The disease spread with alarming rapidity through the population.
• The rapidity of his recovery amazed the doctors.
• The car accelerated with impressive rapidity.
• The rapidity of the river’s current made crossing dangerous.
• He spoke with such rapidity that few could follow his words.