ventriloquial

[ ven-truh-loh-kwee-uh l ]

/ ˌvɛn trəˈloʊ kwi əl /

of, relating to, or using ventriloquism.

Also ven·tril·o·qual

[ven-tril-uh-kwuh l] /vɛnˈtrɪl ə kwəl/.

Origin of ventriloquial

1830–40; ventriloquy + -al¹

ven·tri·lo·qui·al·ly, adverb

They rank among our finest songsters, with ventriloquial and imitative powers added to sweetness of tone.

Bird Neighbors |Neltje Blanchan
One Louis Brabant turned his ventriloquial talent to profitable account.

Harper's New Monthly Magazine, No. XXVII, August 1852, Vol. V |Various
The note of this little bird seems to be of a ventriloquial character like that of the landrail or corncrake.

The Swan and Her Crew |George Christopher Davies
And doing the ventriloquial trick so successfully upon you, too!

The Riddle of the Spinning Wheel |Mary E. Hanshew

Probably his ventriloquial powers are cultivated not for popular entertainment, but to lure intruders away from his nest.

Bird Neighbors |Neltje Blanchan