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

The union’s handling of the collusion arbitration ruling requires a thorough examination and recommitment of the NFLPA’s intentions in its representation of players, regardless of the name on the top of the masthead. —Pat Leonard, New York Daily News, 18 July 2025

Continue reading … 'NO IDEA' – Former CIA chief 'clueless' about probe into his Russia collusion investigation. —FOXNews.com, 10 July 2025

The airport denies any collusion with Uber or Lyft and maintains that all drivers, as independent contractors, must adhere to airport policies. —Hadley Hitson, The Tennessean, 2 July 2025

The rules were clear: no talk of pricing or anything that could be considered collusion. —Jim Edwards, Fortune, 1 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