Secret cooperation or a secret agreement between parties in order to deceive others or achieve an unlawful purpose.

From Latin ''colludere'', from ''com-'' (together) and ''ludere'' (to play).

connivance conspiracy complicity collaboration
competition transparency rivalry independence
"Investigators uncovered collusion between the contractor and municipal officials to inflate the cost of the public works project."

Apply in GS Paper 3 (economy) for bid-rigging and cartelisation, and in GS Paper 4 (ethics) for corruption and conflict of interest. A strong word for essays on crony capitalism, procurement fraud, and the erosion of institutional integrity.

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