unvocal

(ʌnˈvəʊkəl)

adj

1. not vocal or oral; not involving the voice; (of music) not involving or written for the voice; instrumental

2. (of a person or group of people) not having a voice; not vocal or outspoken; not loud or voluble in speech; not eloquent

Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014

References in periodicals archive ?

Consonants are vocal or unvocal, The vocal nasal consonants (m, n, ng) require no special remark.