WordReference Random House Learner's Dictionary of American English © 2014
swift /swɪft/USA pronunciation adj., -er, -est,adv., n. 
adj.  moving or able to move with great speed:a swift boat. coming, happening, or performed quickly:a swift decision. [often: be + ~ + to + verb] quick to act or respond:The president was swift to respond to the new crisis. [Slang.]smart; clever.
adv.  in a swift manner.
n. [countable] Birdsa long-winged, swallowlike bird. swift•ly, adv.: She ran swiftly ahead of the others.
swift•ness, n. [uncountable]


Collins Concise English Dictionary © HarperCollins Publishers::

swift /swɪft/ adj
  1. moving or able to move quickly; fast
  2. occurring or performed quickly or suddenly; instant
  3. (postpositive) followed by to: prompt to act or respond: swift to take revenge
adv
  1. swiftly or quickly
  2. (in combination): swift-moving
n
  1. any bird of the families Apodidae and Hemiprocnidae, such as Apus apus (common swift) of the Old World: order Apodiformes. They have long narrow wings and spend most of the time on the wing
  2. any of certain North American lizards of the genera Sceloporus and Uta that can run very rapidly: family Iguanidae (iguanas)
  3. the main cylinder in a carding machine
  4. an expanding circular frame used to hold skeins of silk, wool, etc
Etymology: Old English, from swīfan to turn; related to Old Norse svifa to rove, Old Frisian swīvia to waver, Old High German sweib a reversal; see swivel

ˈswiftly adv ˈswiftness n



Swift /swɪft/ n
  1. Graham Colin. born 1949, British writer: his novels include Waterland (1983), Last Orders (1996), which won the Booker prize, and The Light of Day (2002)
  2. Jonathan. 1667–1745, Anglo-Irish satirist and churchman, who became dean of St Patrick's, Dublin, in 1713. His works include A Tale of a Tub (1704) and Gulliver's Travels (1726)

ˈSwiftian adj



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