to synchronize (recorded sound) with lip movements, as of an actor in a film.
to match lip movements with (recorded speech or singing): She did a clumsy job of lip-syncing her big song.
the technical process by which this is done.
the simultaneous recording of voice and picture, especially the synchronization of lip movements with recorded sound.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
How to use lip-sync in a sentence
The higher your score, the more likely it is that you can lip-sync along to the “Checkers” Speech.
Does it matter whether Taylor Swift wants me to inflate my Internet notoriety by doing a dumb thing where I lip sync to her music?Death of the Author by Viral Infection: In Defense of Taylor Swift, Digital Doomsayer | Arthur Chu | December 3, 2014 | THE DAILY BEAST
It had been many moons since I've heard a pop star do anything but lip-sync.
The video took one day to film because I just break up the audio parts on my computer and lip sync it.‘After Ever After’: 13 Questions With YouTube Sensation Jon Cozart | Anna Klassen | March 18, 2013 | THE DAILY BEAST
Did Beyoncé lip-sync “The Star-Spangled Banner” during the inauguration?Beyoncé’s Lip-Sync, Obama Inauguration, Manti Te’o & More Viral Videos | The Daily Beast Video | January 26, 2013 | THE DAILY BEAST