mouthing the words

Verb

mouth the words (third-person singular simple present mouths the words, present participle mouthing the words, simple past and past participle mouthed the words)

1. (literally) To mouth words in the sense "to make the actions of speech, without producing sound."
   • Indeed, on Dick Clark's madly popular teen-age TV show the various acts never sing at all, but merely mouth the words to their own taped recordings.1960, Dorothy Uris, “The Family Speech Workshop”, in Everybody's Book of Better Speaking, →OCLC, page 73
2. (idiomatic) To speak insincerely.
   • They mouth the words “democracy” and “Americanism”, but they inject in their preachments national hatred, national aggrandizement, and glorification of the fascist dictatorships.1935, Moissaye Joseph Olgin, “The Struggle Against Fascism”, in Why Communism? Plain Talks on Vital Problems, 2nd Revised edition, page 48