This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

• Lexulous
• Wordscraper
• Wordosaur

adj. Not expressed or uttered: unvoiced fears.

adj. Linguistics Voiceless: unvoiced consonants.

adj. Not spoken or expressed.

adj. Spoken without vibration of the vocal chords.

Not spoken; unuttered; not articulated or pronounced.

In phonetics, not uttered with voice as distinct from breath; unintonated; surd.

adj. not made explicit

adj. produced without vibration of the vocal cords

"Over at Bell Labs, "shh" is called unvoiced fricatives, or "unvoiced hiss energy," pulmonary turbulence modulated by tongue, teeth and lips."

unvoiced    unvoices    unvoicing