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

To make voiceless

• thigh
• thigh bone
• thigh bones
• thigh boot
• thigh boots
• thighs
• thigmotactic
• thigmotactically
• thigmotaxis
• thigmotropic
• thigmotropism
• thigmotropisms
• thigs
• thilk
• thill
• thiller
• thillers
• thill-horse
• thills
• thimble
• thimble case
• thimble cases
• thimbled
• thimbleful
• thimblefuls