Done secretly or dishonestly by two or more people working together to deceive or gain unfair advantage.
From Latin 'collusivus' (characterized by collusion), derived from 'colludere' (to play together, conspire). The adjective form uses the '-ive' suffix to create a quality descriptor.
In law, finding a 'collusive agreement' means proving that two parties secretly agreed to defraud a third party—judges look for collusive behavior in divorce settlements, business deals, and insurance claims because it undermines the entire legal process.
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