The quality or state of being collusive; the characteristic of involving secret coordination or dishonest agreement.
From 'collusive' + the abstract noun suffix '-ness,' which creates nouns from adjectives representing an abstract quality or state.
The 'collusiveness' of a business deal is what prosecutors try to prove—they need to show not just that competitors charged similar prices, but the deliberate nature of their agreement, which requires evidence of communication or coordination.
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