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lip-sync

or lip·synch, lip·sync

[lip-singk]Movies, Television.
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verb (used with or without object)
  1. to synchronize (recorded sound) with lip movements, as of an actor in a film.
  2. to match lip movements with (recorded speech or singing): She did a clumsy job of lip-syncing her big song.
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noun
  1. the technical process by which this is done.
  2. the simultaneous recording of voice and picture, especially the synchronization of lip movements with recorded sound.
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Origin of lip-sync

First recorded in 1960–65
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

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