The breaking up of ‘trusts’ or industrial combinations; the activities of a trust-buster. (noun)
The Century Dictionary (Public Domain)
Use "trust-busting" in a sentence
"There is a case for breaking up our very biggest banks, especially Lloyds, in a British trust-busting moment – I make it in my book Them and Us – and limiting their speculative proclivities along American lines."
"Bottom line: If you want to end liberal media bias, trust-busting won't work."
"This is not a dualism between socialism and free market, but the goal of allowing capitalism to prosper is an old American debate going back to the trust-busting Teddy Roosevelt."