a cheetah
The swiftness of the horse was very unsually. The young fighter fought with the swiftness of a professional fighter.
The swiftness of the animal was extraordinary.
Matilda was running with so much swiftness, I couldn't see her at all!
mercury
rapidity of motion; swiftness
A boot.
The word "tiger" was probably derived from the Greek word "Tigris". The Greeks possibly borrowed this word from a Persian word meaning "arrow", due to the animal's swiftness.
The abstract noun for the adjective swift is swiftness.
It means quickness, swiftness.
Foxes are known for there swiftness and sneakiness
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.