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⇱ rapidity - WordReference.com Dictionary of English

rapidity

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UK:**UK and possibly other pronunciationsUK and possibly other pronunciations/rəˈpɪdɪti/US:USA pronunciation: IPA and respellingUSA pronunciation: IPA/rəˈpɪdɪti/ ,USA pronunciation: respelling(rə pid′i tē)


WordReference Random House Unabridged Dictionary of American English © 2026
ra•pid•i•ty  (rə pid′i tē),USA pronunciation n. 
  1. a rapid state or quality; quickness;
    celerity.
Also, rap•id•ness  (rap′id nis).USA pronunciation 
  • Latin rapiditās. See rapid, -ity
  • 1610–20
    swiftness, fleetness. See speed. 
WordReference Random House Learner's Dictionary of American English © 2026
rap•id /ˈræpɪd/USA pronunciation   adj., -er, -est, n. 
adj. 
  1. fast, quick-moving, swift:rapid motion; rapid growth.

n. 
  1. GeographyUsually, rapids. [plural] a part of a river where the current runs very swiftly.
ra•pid•i•ty /rəˈpɪdɪti/USA pronunciation  rap•id•ness, n. [uncountable]
rap•id•ly, adv. See -rape-.

WordReference Random House Unabridged Dictionary of American English © 2026
rap•id  (rap′id),USA pronunciation adj., -er, -est, n. 
adj. 
  1. occurring within a short time;
    happening speedily:rapid growth.
  2. moving or acting with great speed;
    swift:a rapid worker.
  3. characterized by speed:rapid motion.

n. 
  1. GeographyUsually, rapids. a part of a river where the current runs very swiftly.
  • Latin rapidus tearing away, seizing, swift. See rape1, -id4
  • 1625–35
rap′id•ly, adv. 
    2. See quick. 
'rapidity' also found in these entries (note: many are not synonyms or translations):
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