Related Clues:

• O, a D might be so intrusive
• 'That's the ad, perhaps, for what 7 down may be making (7)'
• Midnight visits to the refrigerator
• Commando excursions
• Commando actions
• Sudden assaults
• Fashionable ways to make encroachments
• Hostile incursions into Greek island, say
• Intrusive moves made by voguish explorer, say
• Appreciable amounts made into entrances?
• Sudden raids using force, or otherwise, say
• Entrances made by trespassers?
• Hostile incursions where the fleet lies at anchor?
• Major acts of encroachment
• Raids on new invasions