[ uhn-voh-kuh l ]
/ ʌnˈvoʊ kəl /
not outspoken; reserved; not eloquent in speech; inarticulate.
not mellifluous, as the speaking voice.
not melodious; unmusical: unvocal attempts at writing art songs.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Examples from the Web for unvocal
The very word cantabile emphasizes, by antithesis, the unvocal character of the old florid style.Chopin and Other Musical Essays|Henry T. Finck