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conspire against (something or someone)

To join together in force or combine in such a way as to foil or defeat someone or something. The wind and rain conspired against our plans for an outdoor barbecue. His two younger brothers conspired against him to have him removed from the head of the company.
See also: conspire

conspire with (one)

To plot or scheme with one. What are you kids whispering about back there? You better not be conspiring with each other! The president of the company conspired with his assistant to conceal all evidence of his crime.
See also: conspire

conspire with someone (against someone or something)

 and conspire (with someone) against someone or something
to join with someone in a plot against someone or something else. The CEO conspired with the board of directors against the stockholders. Ed conspired with Sam against the plan.
See also: conspire
References in periodicals archive ?
Conspire analyses email data to find paths of connections.
Conspire securely analyzes a user's To, From, Cc, Bcc and Date email headers--equivalent to the outside of the envelope--to determine how well a user knows each of their contacts and how well those contacts, in turn, know their own contacts.
section] 846, simply provides that those who conspire to violate the federal drug laws are to be punished to the same degree as they could be for the drug crime they agree to commit.
But demonstrating that Reagan's camp had the tendency and the motive to conspire does not prove it did.
His solicitor Cornelius McCarthy told the court: "He denies totally that he conspired with anyone and says there is no evidence that he did conspire with anyone.
So the Insiders, who conspire for a world without freedom, must obscure their global ambitions.