a rate (usually rapid) at which something happens;
"the project advanced with gratifying speed"
- The country was occupied with dramatic swiftness.
- The greatest advantage of the panzer army group was swiftness, which came from high level machinery.
- It darted into the ticket with the swiftness of a deer.
- To some he gave strength, to some swiftness, to some claws and to some thick skin.
- swift 快的