Possible Clues:

• Irrationality
• Madness
• Nouns are irregular? Nonsense!
• It would be madness to get one in France about a boy
• Nuns are converted, admitting old foolishness
• There's little sense for a French one about a boy
• There's no log, I see
• French one about one boy? That doesn't make sense
• Peacekeepers' motive is nonsense
• Are wrongly included among abstract nouns: irrationality