S: (n) Gunpowder Plot (a conspiracy in 1605 in England to blow up James I and the Houses of Parliament to avenge the persecution of Catholics in England; led by Guy Fawkes)
S: (n) plot, secret plan, game (a secret scheme to do something (especially something underhand or illegal)) "they concocted a plot to discredit the governor"; "I saw through his little game from the start"
S: (v) conspire, cabal, complot, conjure, machinate (engage in plotting or enter into a conspiracy, swear together) "They conspired to overthrow the government"