Related Clues:

• High-pitched signal that makes bishop jump, reportedly
• Signal -- possible epidemic emerging
• Substitute for bad language in memorable epic
• Warning of terrible epidemic
• '@#$!' cover-up
• [Curse word]
• One sound lost in another
• Substitute for a bad word
• Censor, on TV
• Censor's cover-up
• "Expletive deleted" sound
• Sound way to remove bad language
• TV's curse? Left during live recording
• Censor cuts out the bad language
• High-pitched sound initially bewildering retired PM