Definition of "lip-synch" []

• To move the lips in synchronization with recorded speech or song. (verb-intransitive)
• To move the lips in synchronization with (recorded speech or song): She lip-synched the songs for the movie. (verb-transitive)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "Claire watched Con lip-synch the words, I am the passenger."
• "Instead, after conducting interviews with subjects, including Ms. Dunbar's three daughters and others who recount the family's dark and twisted history, Ms. Barnard hired actors to lip-synch the recorded interviews."
• "Rather than just show the interviewees as talking heads, Barnard had actors lip-synch to the soundtrack in and around The Arbor, part of a Bradford housing estate where Dunbar grew up."