Fake it, musically

• Just pretend to sing
• Pretend, in a way
• Linking of speaker's mouth movements and voice in filmed recordings
• Not really sing
• Sing along silently
• Fake it on stage, say
• Mouth some music
• Mouth the words to a recorded song: Hyph
• Align mouth move­ments with recorded speech

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