regime change noun 2regime-change verb 1forms 4 noun2 •The overthrow of a government that is considered an illegitimate regime by means of an external force (especially military might), and its replacement with a new government according to the concept of political legitimacy promoted by that force. •A radical change; a paradigm shift. regime-change verb1 •(informal) To overthrow or replace an existing government or ruling authority, often through external intervention or political pressure.In the past USA history, we often failed to regime change a single person, but our failure was not as gross of a mistake as Mr. Bush who sends the entire USA military to change a one person regime. — 2004 formsregime-changed · regime-changing · regime-changes · regime changes