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tr.v. un·voiced, un·voic·ing, un·voic·es
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.
1. (Phonetics & Phonology) to pronounce without vibration of the vocal cords
2. (Phonetics & Phonology) another word for devoice
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
v. -voiced, -voic•ing. v.t.
1. to pronounce (an ordinarily voiced speech sound) without or with reduced vibration of the vocal cords.v.i.
2. to devoice a speech sound.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
Past participle: unvoiced
Collins English Verb Tables © HarperCollins Publishers 2011