1530s, "unable to speak," from voice (n.) + -less. Meaning "having no say in affairs" is from 1630s; that of "unspoken, unuttered" is from 1816. In phonology, "unvoiced," from 1867. Related: Voicelessly; voicelessness.
雙語例句
1. His voiceless lips formed the words "Thank you".
他發不出聲音來，翕動著嘴唇說了“謝謝你”這幾個字。
來自柯林斯例句
2. How can we give these people a voice, the voiceless people?