ventriloquize

/vɛnˈtrɪləkwaɪz/
verb
  1. To speak in a way that makes the voice seem to come from a different source, especially a puppet or dummy, by not moving the lips.
    • She can ventriloquize without anyone noticing her lips moving.
    • The performer learned to ventriloquize so well that the audience believed the puppet was talking.
    • At the talent show, he tried to ventriloquize, but his lips kept twitching.
  2. To speak for someone else or express another person's thoughts or opinions as if they were one's own.
    • In the meeting, she felt she had to ventriloquize her boss's ideas to avoid conflict.
    • The author used the character to ventriloquize his own political beliefs.
    • The politician seemed to ventriloquize the views of his party's leaders rather than his own.
Synonyms
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