Co je swift? Co je swift? Moving or capable of moving with great speed; fast. See Synonyms at fast1.Coming, occurring, or accomplished quickly; instant: a swift retort. Quick to act or react; prompt: swift to take steps. Swiftly. Often used in combination: swift-running. A cylinder on a carding machine.A reel used to hold yarn as it is being wound off.Any of various small dark insect-eating birds of the family Apodidae, related to the hummingbirds and noted for their long strong wings and swift flight.Any of various small, fast-moving North American lizards of the genera Sceloporus and Uta.