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Synonyms

rapidity

American  
[ruh-pid-i-tee] / rəˈpɪd ɪ ti /
Also rapidness

noun

rapidities plural
  1. a rapid state or quality; quickness; celerity.

    Synonyms:
    fleetness, swiftness

Synonym Usage

See speed.

Other Word Forms

Noun Inflected Forms

Etymology

Origin of rapidity

From the Latin word rapiditās, dating back to 1610–20. See rapid, -ity

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

The rapidity of these attacks - and the regularity of them, disrupted or acted out, had an extraordinary consequence that further complicated the picture.

From BBC Jul. 6, 2025

When I first began writing my book “Gaia Wakes” eight years ago, I did not anticipate the sheer rapidity of artificial intelligence's ascent.

From Salon May 17, 2025

"Its simplicity and rapidity make it particularly well-suited for studying metabolic changes."

From Science Daily May 21, 2024

Meditation suggests it might be possible, but the rapidity with which our internal terrain changes makes the possibility of any definitive guide all but impossible.

From New York Times Feb. 3, 2024

Danny was working on an experimental psychology project that had to do with the relationship between reinforcement and rapidity of learning, and I was doing a long paper on the logic of ought statements.

From "The Chosen" by Chaim Potok

Tiny spiderlike shells with outboard motors swarmed everywhere boasting varied, astonishing rapidities over 30 m. p. h.

From Time Magazine Archive

He hadn't even to dot his i's beyond the remark that on the very face of it, she would remember, their wonderful system attached no premium to rapidities of transition.

From The Wings of the Dove, Volume II by James, Henry

I merely look on at the rapidities of change with unalloyed interest.

From The Head of the House of Coombe by Burnett, Frances Hodgson

Loudon returned thither from Vienna April 7th; but is not to command in chief, this Year,—Schweidnitz still sticking in some people's throats: "Dangerous; a man with such rash practices, rapidities and Pandour tendencies!"

From History of Friedrich II of Prussia — Volume 20 by Carlyle, Thomas

Different kinds of apples brown with different rapidities, and the browning always begins at the core.

From Martin Hewitt, Investigator by Morrison, Arthur

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