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

To make voiceless

• penny loafers
• penny mail
• penny mails
• penny-piece
• penny-pieces
• penny-pig
• penny-pigs
• penny-pinch
• penny-pinched
• penny-pinching
• penny-pinchs
• penny-plain
• penny-post
• penny-rent
• pennyroyal
• pennyroyals
• penny share
• penny shares
• penny-stane
• penny stock
• penny stocks
• penny-stone
• pennystone-cast
• pennystone-casts
• penny-stones