/ kəˈluːd; NAmE / verb
[ v ] collude (with sb) (in sth / in doing sth) | collude (with sb) (to do sth) ( formal , disapproving ) to work together secretly or illegally in order to trick other people :
Several people had colluded in the murder.
They colluded with terrorists to overthrow the government.
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WORD ORIGIN
early 16th cent.: from Latin colludere have a secret agreement, from col- together + ludere to play.