| English | Synonym |
|---|---|
| voiceless adjective | aphonicadjective breathedadjective disenfranchisedadjective disfranchisedadjective enfranchisedadjective hardadjective inarticulateadjective inaudibleadjective surdadjective unarticulateadjective unhearableadjective unvoicedadjective voicedadjective votelessadjective whisperedadjective |
| voiceless consonant noun | consonantnoun surdnoun |
| voicelessness noun | aphonianoun defect of speechnoun impotencenoun impotencynoun powerlessnessnoun speakingnoun speech defectnoun speech disordernoun speech productionnoun susurrationnoun whispernoun whisperingnoun |