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

To make voiceless

• squash racquets
• squash tennis
• squash tennises
• squashy
• squat
• squat lobster
• squat lobsters
• squatness
• squatnesses
• squats
• squat shop
• squat shops
• squatted
• squatter
• squattered
• squattering
• squatters
• squattest
• squat thrust
• squat thrusts
• squattier
• squattiest
• squattiness
• squattinesses
• squatting