• Webster's Revised Unabridged Dictionary
    • v. t Outvoice To exceed in noise.
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Century Dictionary and Cyclopedia
    • outvoice To render inaudible by greater loudness of voice; be more clamorous or noisy than.
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Chambers's Twentieth Century Dictionary
    • v.t Outvoice owt-vois′ (Shak.) to exceed in clamour or noise: to drown the voice of.
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In literature:

But the laughter of Charlie's delirium outvoiced the winds.
"The Way of the Wind" by Zoe Anderson Norris
The sound of running water was outvoiced by the loud din of machinery in motion.
"The Submarine Hunters" by Percy F. Westerman
A gong clanged noisily in the conning-tower, its verberations outvoicing the pulsations of the oil-fed motors.
"Billy Barcroft, R.N.A.S." by Percy F. Westerman
With a rousing British cheer that outvoiced the rattle of musketry the impetuous seamen obeyed.
"The Fight for Constantinople" by Percy F. Westerman

In poetry:

Is it in Heaven, or mid—way of the Earth,
Thou learn'st to outvoice, outnumber all the Nine?
What is the secret of thy madcap mirth?
Wilt thou not tell it me, and make it mine?
What is all my singing worth,
Matched with thine?
"A Souless Singer" by Alfred Austin