1. People who oppose or work against monopolies and large corporate trusts, especially those who advocate for antitrust laws and enforcement.
Usage: Plural form of antitrust advocate or activist; Often used in historical contexts referring to early 20th-century reformers

Examples

• The antitrusters of the Progressive Era fought to break up large industrial monopolies.
• Modern antitrusters argue that tech companies have become too powerful.
• President Theodore Roosevelt was supported by antitrusters in his campaign against corporate trusts.
• Contemporary antitrusters advocate for stricter enforcement of competition laws.
• The antitrusters believed that breaking up monopolies would benefit consumers and small businesses.