collude v : act in unison or agreement and in secret towards a deceitful or illegal purpose; "The two companies conspired to cause the value of the stock to fall" [syn: conspire]

Collude \Col*lude"\, v. i. [imp. & p. p. Colluded; p. pr. & vb. n. Colluding.] [L. colludere, -lusum; col- + ludere to play. See Ludicrous.] To have secretly a joint part or share in an action; to play into each other's hands; to conspire; to act in concert. If they let things take their course, they will be represented as colluding with sedition. --Burke.

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Collusion is an agreement between two or more persons, sometimes illegal and therefore secretive, to limit open competition by deceiving, misleading, or defrauding others of their legal rights, or to obtain an objective forbidden by law typically by defrauding or gaining an unfair advantage.

In the study of economics and market competition, collusion takes place within an industry when rival companies cooperate for their mutual benefit. Collusion most often takes place within the market structure of oligopoly, where the decision of a few firms to collude can significantly impact the market as a whole. Cartels are a special case of explicit collusion. Collusion which is not overt, on the other hand, is known as tacit collusion.

According to neoclassical price-determination theory and game theory, the independence of suppliers forces prices to their minimum, increasing efficiency and decreasing the price determining ability of each individual firm. However, if firms collude to increase prices loss of sales is minimized as consumers lack alternative choices at lower prices. This benefits the colluding firms at the cost of efficiency to society.

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  KUALA TERENGGANU, May 1 – Datuk Seri Najib Tun Razak said today Umno was not an “assabiyah” (racist) party as certain political parties claimed. The prime minister said the government had never rejected Islam in the national administration and, in fact, the Umno national spirit was founded on Islam. “Assabiyah is when we collude to do wrong, ...       � Read more on this news related to 'Collude'