Deciphers in a way

• Watches one's language?
• Follows from afar, maybe
• Sees what is said
• Understands without hearing
• Watches one's mouth?
• Listens with one's eyes
• "Listens" visually
• Understands spoken words without being able to hear them

Wiktionary Word definitions in Wiktionary
vb. (en-third-person singular of: lipread )