A person who meddles or pries into the affairs of others.(noun)
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Use "busybody" in a sentence
"If one is called a busybody, it is a negative character assessment."
"Regarding the mother of my neighbour, apparently, the busybody is actually living in her daughter’s house and the daughter, who has lived here for many years, knows the rules and has been more than happy to report other people who have had guests staying longer than they should."
"Though he is too great and important to be called a busybody, we still feel sympathetically something of the suppressed irritation and sense of hindrance and interruption with which the lords must have regarded this companion with his "devout imaginations," whom they dared not neglect, and who was sure to get the better in every argument, generally by reason, but at all events by the innate force of his persistence and daring."