connive
Concise Oxford English Dictionary © 2008 Oxford University Press:
connive /kəˈnʌɪv/
▶verb (connive at/in) secretly allow (a wrongdoing).
■ (often as adj. conniving) conspire to do something unlawful or harmful.
– derivatives
connivance noun,
conniver noun.
connivance noun,
conniver noun.
– origin C17 (earlier (C16) as connivance): from Fr. conniver or L. connivere ‘shut the eyes (to)’, from con- ‘together’ + an unrecorded word rel. to nictare ‘to wink’.
'connive' also found in these Oxford entries:

