connive

From French conniver (“to ignore and thus become complicit in wrongdoing”), or directly from its etymon Latin con(n)īvēre (“close or screw up the eyes, blink, wink; overlook, turn a blind eye, connive”) (perhaps alluding to two persons involved in a scheme together winking to each other), from con- (prefix indicating a being or bringing together of several objects) + nīvēre (related to nictō (“to blink, wink”), from Proto-Indo-European kneygʷʰ- (“to bend, droop”)).