Definitions

1. noun

A person who is a supporter of Senator Joseph McCarthy, known for his anti-communist investigations, or a person who is excessively critical or opposed to something.

“The McCarthyism of the 1950s had a lasting impact on American politics.”

2. proper noun

A surname, particularly of Irish origin, referring to a person bearing this name.

“John McCarthy is a well-known McCarthy.”

3. verb

To accuse or criticize someone or something in an unfair or excessive manner.

“The journalist was accused of McCarthyizing the politician’s past.”