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soundproof

[sound-proof] /ˈsaʊndˌpruf/
adjective
1.
impervious to sound.
verb (used with object)
2.
to cause to be soundproof.
Origin
1875-1880
1875-80; sound1 + -proof
Related forms
soundproofing, noun
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for sound-proofed

soundproof

/ˈsaʊndˌpruːf/
adjective
1.
not penetrable by sound
verb
2.
(transitive) to render soundproof
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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