Related Clues:

• Plagiarism and such
• Thou-shalt-nots
• Iconoclasts break them
• Half an etiquette list
• We won't accept these contemptuous noises, thank you, for a start
• Verboten things
• Spooky quality
• Many of the Ten Commandments
• Things that shouldn't be done
• They're unacceptable
• Off-limits acts
• They don't allow labels with loops in them
• A sign of disapproval in case of treacherous restrictions
• Prohibition specifics
• Fatty foods, to dieters