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

To make voiceless

• urea
• urea-formaldehyde resin
• urea-formaldehyde resins
• ureal
• urea resins
• ureas
• uredia
• Uredinales
• uredine
• Uredineae
• uredines
• uredinia
• uredinial
• urediniospore
• urediniospores
• uredinium
• uredinous
• urediospore
• urediospores
• uredium
• uredo
• uredosori
• uredosorus
• uredospore
• uredospores