Added 9 October 2026 antitrust /ˌæntiˈtɹʌst/ adjective Categories: Describing WordsUncommon Words adjective ! Definition from WordNet 3.1, Princeton University. Pronunciation from Wiktionary, via Kaikki.org. More about antitrust at Wordnik → Where our words come from → Of laws and regulations; designed to protect trade and commerce from unfair business practices. Related Words: antimonopolyjustfairmonopolisticmonopolyanti-trusttrust-bustingfair-tradedeconcentrationanti-monopolyantimonopolisticantitotalitarian Back to today's word