Related Clues:

• Break a Commandment
• Item for confession
• Moral no-no
• Social blunder for Nanette?
• Sloth, e.g.
• Forbidden activity
• Confession item
• Something to avoid
• It could be original
• It's off-limits
• Admonition to Nanette
• Dreadful deed
• It's verboten
• Mortal thing
• Tax type