/ kəmˈplɪsəti; NAmE / noun
[ U ] complicity (in sth) ( formal ) the act of taking part with another person in a crime
SYN collusion :
to be guilty of complicity in the murder
evident complicity between the two brothers
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WORD ORIGIN
mid 17th cent.: from Middle English complice an associate , from Old French , from late Latin complex , complic- allied, from Latin complicare fold together, from com- together + plicare to fold. Compare with accomplice .