Busybody (noun)

1. A person who excessively interferes in the affairs of others.
2. A person who is overly interested in the affairs of others and is inclined to meddle or gossip.

Origin:

From busy (actively engaged or occupied) + body (a person).

Examples:

1. She was known as a busybody, always sticking her nose into other people's business.
2. The busybody couldn't help but gossip about the affairs of her neighbors.
3. He was always a busybody, always looking for something to do or to know.
4. The busybody tried to interfere in the couple's relationship.
5. The busybody had a reputation for being nosy and meddling.