Synonym: celerity, quickness, rapidness, speediness. Similar words: vapidity, cupidity, stupidity, rapid, rapidly, aridity, acidity, avidity. Meaning: [ræ'pɪdɪtɪ] 
n. a rate that is rapid.
n. a rate that is rapid. 
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1, The styles change with bewildering rapidity.
2, Their debts mounted with alarming rapidity.
3, The disease is spreading with alarming rapidity.
4, The water rushed through the holes with great rapidity.
5, The film shows the rapidity of the changes in this area of medicine.
6, The rapidity with which El precipitado moves from scene to scene makes it a very fast moving drama.
7, The dizzy rapidity of changes in the ministry was matched only by the accelerating deficit.
8, The main amplifier demands a high rapidity in AGC.
9, Aminal and vegetable pests propagate with extreme rapidity.
10, The soldiers loaded and discharged with great rapidity.
11, Her character ripened and developed with frightfully rapidity.
12, Despite the rapidity with which a dooryard became the woods again, there was still something of a south-facing clearing there.
13, His rapidity in establishing inter - personal relations tends to be matched by the superficiality of such relations.
14, Retiming, which can optimize the rapidity, area and functional extravagance through moving the sequential elements and change the number of sequential elements.
15, And the parrot would say , with great rapidity ,'Pieces of eight!
16, Lightness, rapidity , nimbleness ,[http://sentencedict.com/rapidity.html] grace and apparel all to theThe emeraldthethe topaz gleam upon its dress.
17, His son was obsessive about music, mastering classical, folk and rock modes with alarming rapidity.
18, During the last minutes she had been talking with extreme rapidity in a light high voice.
19, All three were drinking whisky, barely moistened with soda water, with a rapidity that had ceased to startle their friends.
20, The men were knocked away from them with great rapidity and slaughter by the terrible fire of the enemy.
21, Almost like new roses themselves, chemical insecticides and fungicides come and go with remarkable rapidity.
22, Cheaper memory, faster processors, and larger storage devices, come on to the market with increasing rapidity.
23, Our batteries were dashing across the plain with frightful vehemence, wheeling into position and firing with terrific rapidity.
24, The change appears to be a genuine evolutionary development that has taken place with unusual rapidity.
25, My eyes turned instinctively in the direction, and I saw a figure leap with great rapidity behind the trunk of a pine.
26, The operation, to be successful, had to be carried out with great rapidity.
27, While the count picked up the paper he put spurs to his horse, which leaped in astonishment at such an unusual stimulus, and shot away with the rapidity of an arrow.
28, Email has been in general use for its convenience, rapidity, cheapness, easy saving and management.
29, The influence of various parameters of planing boat on rapidity and navigability is also analyzed.
30, After affirming the existence of non-Fourier effect, the hyperbolic equation suited for describing rapidity heat transfer process inside propellant is obtained.
More similar words: vapidity, cupidity, stupidity, rapid, rapidly, aridity, acidity, avidity, validity, lucidity, rigidity, humidity, solidity, timidity, placidity, liquidity, morbidity, hyperacidity, relative humidity, sapid, vapid, dilapidate, epididymis, dilapidated, dilapidation, rapier, therapist, scraping, you said it, iditarod.