devocalize or devocalise /dē-vōˈkə-līz/ or devoice /dē-voisˈ/

To make voiceless

• mud pie
• mud pies
• mud pump
• mud pumps
• mudpuppies
• mudpuppy
• mudra
• mudras
• muds
• mudscow
• mudscows
• mudskipper
• mudskippers
• mudslide
• mudslides
• mudslinger
• mudslingers
• mudslinging
• mudslingings
• mudstone
• mudstones
• mud turtle
• mud turtles
• mud volcano
• mud volcanoes