Rare a person who mars or spoils some plan by officious interference
Origin of marplotultimately ; from mar + plot
An officious meddler whose interference compromises the success of an undertaking.
Origin of marplotAfter Marplot, a character in The Busy Body, a play by Susannah Centlivre (1669–1723).
- A meddlesome person whose activity interferes with the plans of others. [from 18th c.]