Possible Clues:

• Deprive of hearing
• Pierce the ears of
• To make one quite unsound one will need a F
• Burst the eardrums
• Noisily overwhelm most of lifeless wetland
• Cause to lose hearing as from explosion
• Block ears of college fellow about female, not male
• Be too loud
• At last a marsh will affect one's hearing
• Render senseless fine English in chapter's header