rapidity

noun

rə-ˈpi-də-tē How to pronounce rapidity (audio)
Definition of rapiditynext
as in velocity
a high rate of movement or performance the rapidity with which she can do mental math calculations is amazing

Synonyms & Similar Words

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Antonyms & Near Antonyms

Example Sentences

Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Recent Examples of rapidity But this doesn’t explain the rapidity of the shift nor the fact that all the leading American AI research labs moved in the same direction. — Nick Srnicek, Wired News, 14 Jan. 2026 Still others warned of the rapidity with which democracy could give way to dictatorship. — Talya Zax, The Atlantic, 23 Dec. 2025 The film captures the rapidity of time, with flashes of beauty and brutality whipping by in turn. — Anastasia Sanger, Glamour, 22 Dec. 2025 The first is the rapidity of innovation. — Ravi Kumar S, MSNBC Newsweek, 2 Dec. 2025 See All Example Sentences for rapidity
Recent Examples of Synonyms for rapidity
  1. velocity
  2. speed
Noun
  • The underwater navigation itself is also power-hungry, as the robot has to rely on inertial sensors and acoustic Doppler velocity logging to track its position, since satellite navigation is useless once it's submerged.
    — New Atlas, New Atlas, 5 July 2026
  • Gage’s velocity noticeably declined towards the tail end of his outing.
    — Justice delos Santos, Mercury News, 4 July 2026
Definition of velocity
Noun
  • The Beltline allows only Class 1 or 2 e-bikes and speeds of only up to 15 mph.
    — Doug Turnbull, AJC.com, 5 July 2026
  • Pfendler appears to have broken both the previous women's speed record as well as the men's speed record, according to records maintained by Ocean Rowing Society International, which adjudicates ocean-rowing achievements for Guinness World Records.
    — ABC News, ABC News, 4 July 2026
Definition of speed

Browse Nearby Words

rapid-fire
rapidity
rapidly
See all Nearby Words

Cite this Entry

“Rapidity.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/rapidity. Accessed 11 Jul. 2026.

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More from Merriam-Webster on rapidity

Nglish: Translation of rapidity for Spanish Speakers

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