One who meddles or interferes in something not of their concern.
1759, Adam Smith, The theory of moral sentimentsThe prudent man is not willing to subject himself to any responsibility which his duty does not impose upon him. He is not a bustler in business where he has no concern; is not a meddler in other people’s affairs; is not a professed counsellor or adviser, who obtrudes his advice where nobody is asking it.
1868, Horatio Alger, Struggling Upward“Yes, Mr. Coleman, I have,†answered Luke steadily. “I thought it my duty to inform this man of your character. I have advised him to put his money into a savings-bank.â€â€œCurse you for an impertinent meddler!†said Coleman wrathfully. “I’ll get even with you for this!â€â€œYou can do as you please,†said Luke calmly.
1934, H. P. Lovecraft, ,“Stop!†The hoarse, oddly alien voice of the Swami held a tone beyond all mere earthly fright “I told you there was another form of proof which I could give if necessary, and I warned you not to provoke me to it. This red-faced old meddler is right; I’m not really an East Indian. This face is a mask, and what it covers is not human.â€