antitruster

antitruster

(ˌæntɪˈtrʌstə) n (Commerce) chiefly US a person opposed to trusts, monopolies, or similar organizations

an•ti•trust•er

(ˌæn tiˈtrʌs tər, ˌæn taɪ-)

n. a person who makes or enforces antitrust legislation. [1945–50]