voicelessadj.
英 'vɒɪslɪs | 美 'vɔɪsləs
中文adj. 无声的；清音的；沉默的
词根词源
voiceless (adj.)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.
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