secret agreement especially in order to do something dishonest or to trick people 密谋;勾结;串通 - in collusion with somebody
The police were corrupt and were operating in collusion with the drug dealers. 警察腐败,与毒品贩子内外勾结。 - collusion (between A and B)
There was collusion between the two witnesses (= they gave the same false evidence). 两个证人串通作伪证。
Word Originlate Middle English: from Latin collusio(n-), from colludere ‘have a secret agreement’, from col- ‘together’ + ludere ‘to play’.- in collusion with somebody