conspiracy

noun

con·​spir·​a·​cy kən-ˈspir-ə-sē 

plural conspiracies

1

: the act of conspiring together

They were accused of conspiracy to commit murder.

2

a

: an agreement among conspirators

uncovered a conspiracy against the government

b

: a group of conspirators

a conspiracy made up of disgruntled aristocrats

see also conspiracy theory

Synonyms

• Mafia
• gang
• syndicate
• network

Choose the Right Synonym for conspiracy

plot, intrigue, machination, conspiracy, cabal mean a plan secretly devised to accomplish an evil or treacherous end.

plot implies careful foresight in planning a complex scheme.

an assassination plot

intrigue suggests secret underhanded maneuvering in an atmosphere of duplicity.

backstairs intrigue

machination implies a contriving of annoyances, injuries, or evils by indirect means.

the machinations of a party boss

conspiracy implies a secret agreement among several people usually involving treason or great treachery.

a conspiracy to fix prices

cabal typically applies to political intrigue involving persons of some eminence.

a cabal among powerful senators

Examples of conspiracy in a Sentence

The CIA uncovered a conspiracy against the government.

They were accused of conspiracy to commit murder.

Recent Examples on the Web

The least convincing aspect of the show is the conspiracy itself, which seems oversimplified for a scandal of its magnitude. —Judy Berman, Time, 29 Oct. 2025

Prosecutors also allege that members of the conspiracy used special contact lenses or glasses that could read certain cards from behind. —Ben Brachfeld, PEOPLE, 28 Oct. 2025

There were also major scandals involving Baltimore Colts quarterback Art Schlichter, who bet on NFL games during the 1982 season, and Boston College men’s basketball players who participated in a point-shaving conspiracy in the late 1970s. —Michael McCann, Sportico.com, 28 Oct. 2025

The rapper ultimately pleaded guilty to conspiracy to distribute 500 grams or more of cocaine and was sentenced to six years in prison in 2023. —Preezy Brown, VIBE.com, 28 Oct. 2025

Word History

Etymology

Middle English conspiracie, from Latin conspirare — see conspire

First Known Use

14th century, in the meaning defined at sense 1

Phrases Containing conspiracy

• conspiracy of silence
• conspiracy theorist
• conspiracy theory
• counter-conspiracy

Kids Definition

conspiracy

noun

con·​spir·​a·​cy kən-ˈspir-ə-sē 

plural conspiracies

1

: the act of conspiring together

2

a

: an agreement among conspirators

b

: a group of conspirators

Legal Definition

conspiracy

noun

con·​spir·​a·​cy kən-ˈspir-ə-sē 

plural conspiracies

1

: an agreement between two or more people to commit an act prohibited by law or to commit a lawful act by means prohibited by law

also : the crime or tort of participating in a conspiracy compare substantive crime

Note: Some states require an overt act in addition to the agreement to constitute conspiracy.

— chain conspiracy

: a conspiracy in which the conspirators act separately and successively (as in distributing narcotics)

— civil conspiracy

: a conspiracy that is not prosecuted as a crime but that forms the grounds for a lawsuit

— criminal conspiracy

: a conspiracy prosecuted as a crime

2

: a group of conspirators

Etymology

Latin conspiratio, from conspirare to conspire see conspire