Align mouth move­ments with recorded speech

• Fake it, musically
• Emulate Milli Vanilli
• Audio and video alignment of speech
• Mouth the words to a recorded song: Hyph
• Sing silently, in a way
• Mouth some music
• Go through the motions in a music video?
• Milli Vanilli deception
• Fake it, in a way

Wiktionary Word definitions in Wiktionary
n. (alternative spelling of lip sync English) vb. (alternative spelling of lip-sync English)