rapidity

1. is a type of: pace, rate - the relative speed of progress or change
   subtypes:

   • fleetness - rapidity of movement
   • immediacy, immediateness, instancy, instantaneousness - the quickness of action or occurrence
   • despatch, dispatch, expedition, expeditiousness - the property of being prompt and efficient
   • promptitude, promptness - the characteristic of doing things without delay
   same as: celerity, quickness, rapidness, speediness

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