"voiceless" in the adjective sense
1. unvoiced, voiceless, surd, hard
produced without vibration of the vocal cords
"unvoiced consonants such as `p' and `k' and `s'"
2. disenfranchised, disfranchised, voiceless, voteless
deprived of the rights of citizenship especially the right to vote
"labor was voiceless"
"disenfrenchised masses took to the streets"
3. breathed, voiceless
uttered without voice
"could hardly hear her breathed plea, `Help me'"
4. aphonic, voiceless
being without sound through injury or illness and thus incapable of all but whispered speech
Source: WordNet® (An amazing lexical database of English)
Princeton University "About WordNet®."
WordNet®. Princeton University. 2010.
View WordNet® License