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adj. rap·id·er, rap·id·est
Moving, acting, or occurring with great speed. See Synonyms at fast1.
n. often rapids
An extremely fast-moving part of a river, caused by a steep descent in the riverbed.

[Latin rapidus, from rapere, to seize; see rep- in Indo-European roots.]

ra·pid′i·ty (rə-pĭd′ĭ-tē), rap′id·ness (răp′ĭd-nĕs) n.
rap′id·ly adv.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.rapidness - a rate that is rapid
pace, rate - the relative speed of progress or change; "he lived at a fast pace"; "he works at a great rate"; "the pace of events accelerated"
fleetness - rapidity of movement; "fleetness of foot"
immediateness, instancy, instantaneousness, immediacy - the quickness of action or occurrence; "the immediacy of their response"; "the instancy of modern communication"
expeditiousness, despatch, dispatch, expedition - the property of being prompt and efficient; "it was done with dispatch"
promptitude, promptness - the characteristic of doing things without delay
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.


The American Heritage® Roget's Thesaurus. Copyright © 2013, 2014 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
hraîi, snarleiki


(ˈrӕpid) adjective
quick; fast. He made some rapid calculations; He looked feverish and had a rapid pulse.
ˈrapidly adverb
raˈpidity noun
ˈrapidness noun
ˈrapids noun plural
a place in a river where the water flows quickly, often having dangerous rocks in mid-stream.
Kernerman English Multilingual Dictionary © 2006-2013 K Dictionaries Ltd.
References in periodicals archive ?
The causes of this absence of rapidness appear to us to improve the prospect for program sales, but of course the reality of slow speed is exasperating.
He further instructed the officials of Chagai district to bring rapidness in the all developmental programs.
In a latest report of New York Time, it has been revealed that Trump family has erected business empire through fraud and money laundering without paying a penny in tax in all rapidness. Evading tax, expanding business illegally and accumulating properties is an iota of tremendous corruption of Trump.
The Froude number describes the general tranquility or rapidness of flow and the Reynolds number turbulence.
In the detection and quantification of drugs in pharmaceutical formulations, the spectrophotometric technique in the ultraviolet region (UV) is widely applied, being used especially in the quality control of pharmaceutical industries because it fulfills essential requirements (rapidness, low operational cost and reliable results) for routine analysis [13, 14].
While it was always likely that one ofAlisson's risks would backfire and lead to a goal one day, the only surprise is the rapidness of such an occurrence after his recent words.
While rapidness and specificity are unquestionable advantages of PCR over virus isolation, the superiority of PCR sensitivity could be argued as the virus isolation may provide higher sensitivity than PCR if the viable virus is presence in the sample and suitable cell lines are used for cell culture.
video.labnol, img.labnol {max-width:100%; width: 100% !important; height: auto !important;} Credit: @ شبكة ابوظبي || أخبار الامارات Several users commented on the video - which was published on Abu Dhabi Network's Instagram account - hailing the officer's rapidness to ensure the safety of the drivers.
Emergency services managed by public authorities are an example of another type of service system where the service time is particularly critical and where the nature or circumstances of an incident may dictate the rapidness of the response.
In terms of economy the first-order derivatives show the rapidness in alteration of economic indicators with respect to the investigated factor by assuming that other factors remain constant.