From Longman Dictionary of Contemporary Englishvoicelessvoice‧less /ˈvɔɪsləs/ adjective 1 unable to get your opinions or concerns noticed by people in power The vast majority of our people feel ignored and voiceless.2 SL technical voiceless sounds are made without using the vocal cords. For example, /p/ and /k/ are voiceless consonants.
Examples from the Corpus
voiceless• And listen to the cry of the voiceless.• the voiceless immigrant community• Notice that of the plosives and fricatives there is one voiceless set and one voiced set.• Notice the lack of contrast between voiced and voiceless sounds and the predominant contrast between long and short consonants. 