Definitions for unvoicedʌnˈvɔɪst
Random House Webster's College Dictionary
not voiced; not uttered:
Ref: voiceless (def. 4). 4
Origin of unvoiced:
unvoiced, voiceless, surd, hard(adj)
produced without vibration of the vocal cords
"unvoiced consonants such as `p' and `k' and `s'"
unexpressed, unsaid, unstated, unuttered, unverbalized, unverbalised, unvoiced, unspoken(adj)
not made explicit
"the unexpressed terms of the agreement"; "things left unsaid"; "some kind of unspoken agreement"; "his action is clear but his reason remains unstated"
Not spoken or expressed.
I could guess her unvoiced opinon.
Spoken without vibration of the vocal chords.