Possible Clues:

• Make confused petition involving government department
• Ask field officer inside to make it less visible
• Befuddle
• Bewilder
• Iron in the mouth turning muddy
• Make a haze around
• Obscure band ends festival of Glastonbury initially
• Render cloudy
• Would that be hard to see in? It's making it obscure
• Obscure English female hides in lavatory, rather rudely