The practice of publicizing accusations of political disloyalty or subversion with insufficient regard to evidence.
The use of indiscriminate, often unfounded, accusations, sensationalism, inquisitorial investigative methods, etc., as in the suppression of political opponents.
Webster's New World
Other Word Forms of McCarthyism
Origin of McCarthyism
After Joseph Raymond McCarthy
From American Heritage Dictionary of the English Language, 5th Edition