transitive verb. To pronounce (a normally voiced sound) without vibration of the vocal chords so as to make it wholly or partly voiceless.

verb. To pronounce a word with little movement of the vocal chords

verb. To remove the voice flag from a user on IRC, preventing them from sending messages to the channel.

verb. utter with tense vocal chords

"As they expanded, they began, for inscrutable Frankish reasons, to devoice word-final obstruents this is the blue isogloss, thereby establishing Frankish as its own distinct, highly conservative dialect."

articulate  enounce  enunciate  pronounce  say  

devoiced  devoices  devoicing