A murderous conspiracy. Obsolete. rare.

A conspiracy, plot; = conspiracy, n. 2. Obsolete.

The action of conspiring; combination of persons for an evil or unlawful purpose.

Law (and thence gen.), in bad sense: A league for an unlawful or evil purpose; a conspiracy.

The action of conspiring; a conspiracy.

The action of confederating, or condition of being confederated; a league, an alliance (between persons or states; in modern use only the latter)…

A design of a covert nature planned in concert; a conspiracy, a plot, n.

A combination, conspiracy, plot. Obsolete except as in b.

figurative. A combination for an evil purpose.

A secret or private intrigue of a sinister character formed by a small body of persons; ‘something less than conspiracy’ (Johnson).

Anything which has been pre-arranged or concocted, esp. with a sinister intent; esp. a conspiracy or plot to incriminate a person on false evidence.

U.S. slang. = frame-up, n. Cf. frame, v. 11.

An act of manipulating a situation in order to reach a desired outcome, esp. by dishonourable or dishonest means, such as abuse of a position of…