plot, intrigue, machination, conspiracy, cabal mean a plan secretly devised to accomplish an evil or treacherous end. plot implies careful foresight in planning a complex scheme.
// an assassination plot intrigue suggests secret underhanded maneuvering in an atmosphere of duplicity.
// backstairs intrigue machination implies a contriving of annoyances, injuries, or evils by indirect means.
// the machinations of a party boss conspiracy implies a secret agreement among several people usually involving treason or great treachery.
// a conspiracy to fix prices cabal typically applies to political intrigue involving persons of some eminence.
// a cabal among powerful senators