[ an-tee-truhst, an-tahy- ]
/ ˌæn tiˈtrʌst, ˌæn taɪ- /


opposing or intended to restrain trusts, monopolies, or other large combinations of business and capital, especially with a view to maintaining and promoting competition: antitrust legislation.

Origin of antitrust

An Americanism dating back to 1885–90; anti- + trust Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for antitrust

British Dictionary definitions for antitrust


/ (ˌæntɪˈtrʌst) /


(modifier) mainly US regulating or opposing trusts, monopolies, cartels, or similar organizations, esp in order to prevent unfair competition
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for antitrust



also anti-trust, 1890, U.S., from anti- + trust (n.) in the economic monopoly sense.

Online Etymology Dictionary, © 2010 Douglas Harper