Synonyms

deceleration

[dee-sel-uh-reyt] Origin

de·cel·er·ate

[dee-sel-uh-reyt] verb, de·cel·er·at·ed, de·cel·er·at·ing.
verb (used with object)
1.
to decrease the velocity of: He decelerates the bobsled when he nears a curve.
2.
to slow the rate of increase of: efforts to decelerate inflation.
verb (used without object)
3.
to slow down: The plane decelerated just before landing.

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Deceleration is always a great word to know.
So is flibbertigibbet. Does it mean:
a children's mummer's parade, as on the Fourth of July, with prizes for the best costumes.
a chattering or flighty, light-headed person.

Origin:
1895–1900; de- + (ac)celerate

de·cel·er·a·tion, noun
de·cel·er·a·tor, noun
non·de·cel·er·a·tion, noun
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2012.
Cite This Source Link To deceleration
Collins
World English Dictionary
decelerate (diːˈsɛləˌreɪt)
 
vb
to slow down or cause to slow down
 
[C19: from de- + accelerate]
 
deceler'ation
 
n
 
de'celerator
 
n

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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Etymonline
Word Origin & History

deceleration
1897, coined from de- "do the opposite of" + (ac)celeration.
Online Etymology Dictionary, © 2010 Douglas Harper
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