noise·less

[noiz-lis]
adjective
accompanied by or making little or no noise; silent; quiet: a noiseless step; a noiseless typewriter.

Origin:
1595–1605; noise + -less

noise·less·ly, adverb
noise·less·ness, noun


inaudible, soundless. See still1.
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World English Dictionary
noiseless (ˈnɔɪzlɪs) [Click for IPA pronunciation guide]
 
adj
making little or no sound; silent
 
'noiselessly
 
adv
 
'noiselessness
 
n

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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00:10
Noiseless is always a great word to know.
So is zedonk. Does it mean:
the offspring of a zebra and a donkey.
a children's mummer's parade, as on the Fourth of July, with prizes for the best costumes.
Example sentences
Many fewer random samples are needed for the noiseless phantom, but gives much poorer results with the noisy phantom.
Respiration may be noiseless or there may be a wheezing, rattling, or clicking sound.
The use of paperless, noiseless, battery-operated or solar calculators is permitted.
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