Trustbuster
noun ·Rare ·Advanced level
Definitions
- 1 A person or entity responsible for breaking up trusts or monopolies. US
"America’s top trustbusters mean to make their policing presence felt. Lawyers, bankers and financiers now “recognise that there are cops on the beat…that we’re vigorously looking to protect the American public from illegal mergers,” says Lina Khan, chair of the Federal Trade Commission (FTC), which enforces consumer-protection and competition laws."
- 2 a federal agent who engages in trust busting wordnet
Example
More examples"America’s top trustbusters mean to make their policing presence felt. Lawyers, bankers and financiers now “recognise that there are cops on the beat…that we’re vigorously looking to protect the American public from illegal mergers,” says Lina Khan, chair of the Federal Trade Commission (FTC), which enforces consumer-protection and competition laws."
Etymology
From trust + buster. Initially used with reference to the antitrust policies of Theodore Roosevelt.
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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.