Monday Muddle: meddle, mettle

Monday Muddle: meddle: (v) to interfere; to pry into someone else's affairs; to involve oneself in someone else's business without invitation or right given by some authority mettle: (n) ability to cope with difficult circumstances; courage; strength; boldness; resilience; spunk

“To prove one’s mettle” is a common expression. If you have proven your mettle you have come through a difficult situation with grace and aplomb. You might need to prove your mettle if you have neighbours who meddle.