The swiftness of the horse was very unsually. The young fighter fought with the swiftness of a professional fighter.
Hermes
The planet Mercury moved faster than the other planets so the Romans named it after the god, Mercury, who was famous for his swiftness in delivering messages.
Matilda was running with so much swiftness, I couldn't see her at all!
a cheetah
A boot.
rapidity of motion; swiftness
Foxes are known for there swiftness and sneakiness
It means quickness, swiftness.
The abstract noun is swiftness. All of the others are words for things you can see or touch.
The word 'swift' is a noun form, a word for a type of small bird. The noun form for the adjective swift is swiftness.
The abstract noun for the adjective swift is swiftness.