The Collaborative International Dictionary
Collusively
Collusive \Col*lu"sive\, a.
Characterized by collusion; done or planned in collusion. ``Collusive and sophistical arguings.''
--J. Trapp. ``Collusive divorces.''
--Strype.Acting in collusion. ``Collusive parties.''
--Burke. -- Col*lu"sive*ly, adv. -- Col*lu"sive*ness, n.
Wiktionary
collusively
adv. in a collusive manner; fraudulently