Conspire

v. i.	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. [imp. & p. p. Conspired (kǒn*spīrd"); p. pr. & vb. n. Conspiring.] They conspired against [Joseph] to slay him. - Gen. xxxvii. 18. You have conspired against our royal person, Joined with an enemy proclaimed. - Shak.
	2.	To concur to one end; to agree. The press, the pulpit, and the stage Conspire to censure and expose our age. - Roscommon.
v. t.	1.	To plot; to plan; to combine for. Angry clouds conspire your overthrow. - Bp. Hall.

Verb	1.	conspire - engage in plotting or enter into a conspiracy, swear together; "They conspired to overthrow the government" Synonyms: cabal, complot, machinate, conjure
	2.	conspire - act in unison or agreement and in secret towards a deceitful or illegal purpose; "The two companies conspired to cause the value of the stock to fall" Synonyms: collude

accord, act in concert, act together, affiliate, agree, ally, amalgamate, angle, associate, band, band together, be in cahoots, be in league, brew, bunch, bunch up, cabal, cement a union, centralize, club, club together, coact, coadunate, coalesce, cogitate, coincide, collaborate, collogue, collude, combine, come together, complot, concert, concoct, concord, concur, confederate, conjoin, connive, consociate, consolidate, contrive, cook up, cooperate, correspond, countermine, counterplot, couple, devise, do business with, engineer, federalize, federate, finagle, finesse, frame, frame up, fuse, gang, gang up, get heads together, get together, go in partners, go in partnership, go partners, hang together, happen together, harmonize, hatch, hatch a plot, hatch up, hold together, hook up, hook up with, join, join forces, join fortunes with, join in, join together, join up with, join with, keep together, lay a plot, league, league together, machinate, make common cause, maneuver, marry, merge, operate, organize, pair, pair off, partner, play ball, pull together, put heads together, reciprocate, rig, scheme, stand together, stand up with, synchronize, synergize, team up, team up with, team with, throw in together, throw in with, tie in, tie in with, tie up, tie up with, unionize, unite, unite efforts, unite with, wangle, wed, work together