Skullduggery (spelled with either a “k” or “c” and/or two “l”s) comes from the Scottish word for adultry: “sculdudrie”. The word is used in modern parlance as a term for underhanded dealings or trickery, often political in nature. Ex. The skullduggery that was Watergate.
The word Skullduggery has been used to title various things from a 1970s Burt Reynolds film to the University of Adelaide orientation week, established in 1896.