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.
双语例句
1. His voiceless lips formed the words "Thank you".
他发不出声音来，翕动着嘴唇说了“谢谢你”这几个字。
来自柯林斯例句
2. How can we give these people a voice, the voiceless people?
