kəˈlüzhən noun
( -s )
Etymology: Middle English collucioun, from Middle French collusion, from Latin collusion-, collusio, from collusus (past participle of colludere ) + -ion-, -io -ion
: secret agreement : secret cooperation for a fraudulent or deceitful purpose
acting in collusion with the enemy
as
a. : a secret agreement between two or more persons to defraud a person of his rights often by the forms of law
b. : agreement between parties considered adversaries at the law (as in a divorce proceeding)
c. : a secret agreement considered illegal for any reason