Related Clues:

• It's not the thing at last so to butt in
• Monkey with the decoration, by the sound of it
• It's not polite at last to butt in like this
• Interfere with 11 down, by the sound of it
• 13 across with the sound of 24 across
• 2 down with the decoration, by the sound of it
• The South might become inquisitive in a lively way
• Before this the South might poke in in a lively sort of way
• 'Interfere with the decoration, by the sound of it (6)'
• 17 down too much
• Nosy person
• Eavesdrop, maybe
• Nosy Nellie
• Jimmy, e.g
• Overinquisitive one