noun

conspiracy

kun-SPEER-uh-see/kənˈspɪrəsi/

A secret agreement to carry out harmful or unlawful acts.

Three adults discuss their conspiracy to steal a jewel.

Three adults of varied appearances secretly plan a theft around a table, pointing to a simple picture of a display case containing a jewel; a closed door and concealed empty sack establish wrongful secrecy.
Etymology

Latin conspiratio meant agreement or union and came from a verb literally meaning “to breathe together.” The English sense specializes that agreement as people secretly uniting to do wrong.

In context

LawShelf0:56
for example plan a joint robbery of a store they can be held liable for conspiracy even if they do not complete the robbery
Criminal Law: The Crime of Conspiracy

More examples

  • Police uncover a conspiracy to burn down the warehouse.
  • She refuses to join the conspiracy against her boss.
  • The prosecutor charges both men with conspiracy to commit fraud.

Forms

conspiracy · conspiracies

conspire verb — To agree secretly to commit wrongdoing.

conspirator noun — Someone who participates in a secret, harmful plot.

Similar words

plot
Emphasizes the secret plan rather than the agreement among participants.
collusion
Emphasizes secret cooperation to deceive others or gain unfair advantage.
scheme
Can describe one person's plan and need not involve wrongdoing.