Possible Clues:

• Persistent, pressing
• Persistent nuisance lucky to avoid fine
• “One more unfortunate / Weary of breath / Rashly ____ / Gone to her death!” (Thomas Hood)
• Annoyingly persistent
• Demanding millions in restoration of reputation
• European support for drift netting fish is urgent
• Persistent misuse of utopian term
• Persistently demanding various permutation
• Demanding permutation of permutation