Usually with respect to laws or policies, in opposition to the creation or continuance of a monopoly.(adjective)
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Use "antimonopoly" in a sentence
"Even Hong Kong — lauded by the Heritage Foundation as the world's freest economy (de facto cartels affect the port to supermarkets to electricity to cement) — has failed to pass the kind of antimonopoly statutes that are a central pillar of developed economies around the world."
"Russia's antimonopoly agency has repeatedly accused the country's top oil producers such as OAO Rosneft , OAO Lukoil Holdings and TNK-BP Ltd. of increasing prices for diesel and jet fuel."
"Russia's antimonopoly service, FAS, said Kores is indeed Russian."