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unvoice

American  
[uhn-vois] / ʌnˈvɔɪs /

verb (used with or without object)

Phonetics.
unvoiced, unvoicing
  1. devoice.


unvoice British  
/ ʌnˈvɔɪs /

verb

  1. to pronounce without vibration of the vocal cords

  2. another word for devoice

"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

Etymology

Origin of unvoice

First recorded in 1630–40; un- 2 + voice