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

To make voiceless

• ski slopes
• ski stick
• ski sticks
• skit
• skite
• skited
• skites
• skiting
• ski touring
• ski tow
• ski tows
• skits
• skitter
• skittered
• skittering
• skitters
• skittish
• skittishly
• skittishness
• skittishnesses
• skittle
• skittle-alley
• skittle-ball
• skittle-balls
• skittled