n.; pl. Conspiracies [ See Conspiration. ] 1. A combination of people for an evil purpose; an agreement, between two or more persons, to commit a crime in concert, as treason; a plot. [ 1913 Webster ]

When shapen was all his conspiracy
From point to point. Chaucer. [ 1913 Webster ]

They made a conspiracy against [ Amaziah ]. 2 Kings xiv. 19. [ 1913 Webster ]

I had forgot that foul conspiracy Of the beast Caliban and his confederates. Shak. [ 1913 Webster ]

2. A concurence or general tendency, as of circumstances, to one event, as if by agreement. [ 1913 Webster ]

A conspiracy in all heavenly and earthly things. Sir P. Sidney. [ 1913 Webster ]

3. (Law) An agreement, manifesting itself in words or deeds, by which two or more persons confederate to do an unlawful act, or to use unlawful to do an act which is lawful; confederacy.

Syn. -- Combination; plot; cabal. [ 1913 Webster ]

a. [ L. conspirans, p. pr. of conspirare: cf. F. conspirant. ] Engaging in a plot to commit a crime; conspiring. [ Obs. ] Shak. [ 1913 Webster ]

n. [ F. conspiration, L. conspiratio. ] Agreement or concurrence for some end or purpose; conspiracy. [ R. ] [ 1913 Webster ]

As soon as it was day, certain Jews made a conspiration. Udall. [ 1913 Webster ]

In our natural body every part has a nacassary sympathy with every other, and all together form, by their harmonious onspiration, a healthy whole. Sir W. Hamilton. [ 1913 Webster ]

n. One who engages in a conspiracy; a plotter. 2 Sam. xv. 31. [ 1913 Webster ]

adj. relating to or characteristic of conspiracy or conspirators; as, a conspiratorial whisper.
Syn. -- conspirative. [ WordNet 1.5 ]

v. t. To plot; to plan; to combine for. [ 1913 Webster ]

Angry clouds conspire your overthrow. Bp. Hall. [ 1913 Webster ]

v. i. [ imp. & p. p. Conspired p. pr. & vb. n. Conspiring. ] [ F. conspirer, L. conspirare to blow together, harmonize, agree, plot; con- + spirare to breathe, blow. See Spirit. ] 1. To make an agreement, esp. a secret agreement, to do some act, as to commit treason or a crime, or to do some unlawful deed; to plot together. [ 1913 Webster ]

They conspired against [ Joseph ] to slay him. Gen. xxxvii. 18. [ 1913 Webster ]

You have conspired against our royal person,
Joined with an enemy proclaimed. Shak. [ 1913 Webster ]

2. To concur to one end; to agree. [ 1913 Webster ]

The press, the pulpit, and the stage
Conspire to censure and expose our age. Roscommon.

Syn. -- To unite; concur; complot; confederate; league. [ 1913 Webster ]

n. One who conspires; a conspirator. [ 1913 Webster ]

adv. In the manner of a conspirator; by conspiracy. Milton. [ 1913 Webster ]