Related Clues:

• Like the "h" in honor
• Soundless
• "Zip it!"
• Like many old movies
• You can break it merely by mentioning it
• Lack of sound
• Mute
• Unspeaking.
• What's left of burnt coal
• Noiseless
• Listen, being speechless after 10 across
• It is golden, they say
• Listen, being quiet
• ` `The rest is ........' ' (Hamlet)
• A continent