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fast

 
 
/fɑːst/ adjective

Definition

QUICK moving, happening, or doing something quickly: fast cars a fast swimmer Computers are getting faster all the time.
TIME [never before noun] If a clock or watch is fast, it shows a time that is later than the correct time: My watch is five minutes fast. → See also a fast track (to sth)
(Definition of fast adjective from the Cambridge Learner's Dictionary © Cambridge University Press)

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