1. a person who meddles or intrudes in other people's affairs without being invited or wanted
Usage: informal; often derogatory; also spelled 'buttinsky'

Examples

• He's such a buttinski—always asking about everyone else's business.
• Don't be a buttinski and stay out of their conversation.
• The buttinski at the office keeps spreading rumors about other people's personal lives.
• She has a reputation as a buttinski who can't mind her own business.
• I wish that buttinski would stop asking me questions about my relationship.
• He's known as the office buttinski because he's always eavesdropping.