collusion

noun

col·​lu·​sion kə-ˈlü-zhən 

: secret agreement or cooperation especially for an illegal or deceitful purpose

acting in collusion with the enemy

collusive

kə-ˈlü-siv 

-ziv

adjective

collusively adverb

Synonyms

• conspiracy
• complicity

Examples of collusion in a Sentence

The company was acting in collusion with manufacturers to inflate prices.

there was collusion between the two companies to fix prices

Recent Examples on the Web

In addition to its reporting on the NFL/NFLPA collusion case, the show also gained notoriety for its coverage of North Carolina head football coach Bill Belichick’s relationship with Jordon Hudson. —Jason Clinkscales, Sportico.com, 5 Aug. 2025

Grassley and Foster were among those officially investigating abuses by the DOJ and FBI related to their targeting of Trump in a false Russia collusion narrative. —Sharyl Attkisson, Baltimore Sun, 25 July 2025

Special counsel John Durham, who was tapped by the Trump I DOJ to investigate the origins of the Trump-Russia collusion narrative, spent four exhaustive years on the probe. —The Editors, National Review, 24 July 2025

The documents released by Gabbard days earlier claimed Obama officials hid intelligence that would have cleared Trump of Russian election collusion. —Ramsey Touchberry, The Washington Examiner, 20 July 2025

Word History

Etymology

Middle English, from Anglo-French, from Latin collusion-, collusio, from colludere — see collude

First Known Use

14th century, in the meaning defined above

Rhymes for collusion

• allusion
• conclusion
• confusion
• contusion
• delusion
• diffusion
• effusion
• exclusion
• extrusion
• illusion
• inclusion
• infusion

Kids Definition

collusion

noun

col·​lu·​sion kə-ˈlü-zhən 

: secret agreement or cooperation for an illegal or dishonest purpose

collusive

-ˈlü-siv 

-ziv

adjective

Legal Definition

collusion

noun

col·​lu·​sion kə-ˈlü-zhən 

: the act or an instance of colluding

collusive

-siv 

adjective