untune

[uhn-toon, -tyoon] /ʌnˈtun, -ˈtyun/

verb (used with object), untuned, untuning.

to render or cause to become out of tune:

Changes in weather can untune a violin.

to discompose; upset, as the mind or emotions.

Origin of untune

1590-1600

First recorded in 1590-1600; un-² + tune

Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2017.
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Historical Examples

To my ear the untune is agony; to my music, a discord in my day is death to what would have been written that day.

A Woman's Will Anne Warner

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