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

To make voiceless

• antinomical
• antinomies
• antinomy
• anti-novel
• anti-novels
• antinuclear
• Antiochene
• Antiochian
• Antiochianism
• antiodontalgic
• antioxidant
• antioxidants
• antipapal
• antiparallel
• antiparticle
• antiparticles
• antipasti
• antipasto
• antipathetic
• antipathetical
• antipathetically
• antipathic
• antipathies
• antipathist
• antipathists