Answer:

aphonic

Answer	Crossword Clue
APHONIC	Mouthed but unspoken
APHONIC	Having to speak in whispers
APHONIC	Voiceless.

APHONIC	Voiceless
APHONIC	Silent
APHONIC	Mouthed but not spoken

Crossword

a puzzle consisting of a grid of squares and blanks into which words crossing vertically and horizontally are written according to clues.