antitrust
adjective [ before noun ]
(also anti-trust) uk/ˌæntiˈtrʌst/ us LAW, COMMERCE
relating to efforts to prevent companies from working together to control prices unfairly or to create a monopoly (= a single company or small group of companies that is the only supplier of something):
The court found that the company had violated antitrust laws.
antitrust concerns/issues/problems
antitrust suit/case/litigation Last month, it threw out an antitrust suit alleging collusion by the nation's largest phone companies.
The deal also needs approval from antitrust regulators.