1. An agreement to defraud another or to do or obtain something forbidden by law. [Cases: Fraud 30.]
2. As a defense to divorce, an agreement between a husband and wife to commit or to appear to commit an act that is grounds for divorce. • For example, before the advent of no-fault divorce, a husband and wife might agree to make it appear that one of them had committed adultery. Cf. CONNIVANCE(2); CONDONATION(2); RECRIMINATION(1). — collude, vb. — collusive, adj. — colluder, n.
tacit collusion. Antitrust. See CONSCIOUS PARALLELISM.