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

To make voiceless

• snaffle-rein
• snaffle-reins
• snaffles
• snaffling
• snaffling-lay
• snaffling-lays
• snafu
• snafued
• snafuing
• snafus
• snag
• snagged
• snaggier
• snaggiest
• snagging
• snaggleteeth
• snaggletooth
• snaggle-toothed
• snaggy
• snags
• snail
• snail darter
• snail darters
• snailed
• snaileries