voiceless is a valid English word

Scrabble validity: valid ( international - Sowpods, US - Twl06 )
iScramble validity: valid
QuickWords validity: valid

Meanings

Adjective (NOT COMPARABLE)

Lacking a voice, without vocal sound.
• Synonym: inaudible, silent, unvoiced
(figurative) Without a vote; having no input into a decision.
(phonetics of a consonant or vowel) Spoken without vibration of the vocal cords; unvoiced, surd, breathed. Examples: [t], [s], [f], [m̥], [u̥].
• Synonym: unvoiced

voiceless is a Scrabble valid word

v4o1i1c3e1l1e1s1s1

• International English (Sowpods) - The word is valid in Scrabble ✔
• US English (TWL06) - The word is valid in Scrabble ✔
• 14 points

voiceless is an iScramble, QuickWords valid word

v1o2i3c4e5l6e7s8s9

• The word is valid in iScramble ✔
• The word is valid in QuickWords ✔
• 45 points

Same letters words (Anagrams)

• none

Same letters plus one

• SOLVENCIES
• VESICULOSE

Same letters minus one

• CLEVISES
• SOLECISE
• VESICLES
• VICELESS