A secret agreement or cooperation between parties for an illegal or deceitful purpose.
सामूहिक षड्यंत्र
English Usage: The two companies were accused of collusion to fix prices in the market.
Hindi Usage: दोनों कंपनियों पर बाजार में कीमतें तय करने के लिए सामूहिक षड्यंत्र का आरोप लगाया गया।