: of, relating to, or being legislation against or opposition to trusts or combinations
specifically : consisting of laws to protect trade and commerce from unlawful restraints and monopolies or unfair business practices

Examples of antitrust in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
But Marxists who dreamed of a workers’ republic could not compete with the reformers in Congress who enacted such measures as a progressive income tax, antitrust legislation, and a ban on child labor. — Michael Kazin, The New York Review of Books, 17 Oct. 2026 High-stakes conflicts over artificial intelligence, data privacy, workplace culture, antitrust laws and other issues are dominating the news and defining our modern era. — Senior Television, Los Angeles Times, 16 Oct. 2026 So in 1981 and ’82, the new Reagan administration completely rewrote the antitrust guidelines, the federal guidelines that instruct federal judges and prosecutors, state attorneys generals, everybody. — John E. McDonough, STAT, 16 Oct. 2026 Bryson DeChambeau, among those who filed an antitrust lawsuit against the tour when LIV began, has not indicated any desire to return. — ABC News, 15 Oct. 2026 See All Example Sentences for antitrust

Word History

First Known Use

1888, in the meaning defined above

Time Traveler
The first known use of antitrust was in 1888

Browse Nearby Words

Cite this Entry

“Antitrust.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/antitrust. Accessed 20 Oct. 2026.

Legal Definition

: of, relating to, or being legislation against or opposition to business trusts or combinations
specifically : consisting of laws to protect trade and commerce from unlawful restraints and monopolies or unfair business practices see also Clayton Antitrust Act and Sherman Antitrust Act
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!