Related Clues:

• Don't do it
• It's strictly taboo
• Taboo thing
• ''___, Nanette''
• Rich dessert, to a dieter
• Putting regular gas in a diesel engine, e.g.
• It's to be avoided
• Wandering bird
• It's taboo
• Admonishing utterance
• Something best avoided
• Deed to avoid
• Something that's taboo
• Baby's taboo
• Tot's taboo