Only Words is a 1993 book by Catharine MacKinnon. In this work of feminist legal theory, MacKinnon contends that the U.S. legal system has used a First Amendment basis to protect intimidation, subordination, terrorism, and discrimination as enacted through pornography, violating the equal protection guarantee of the Fourteenth Amendment.

Catharine Alice MacKinnon is an American feminist legal scholar, activist, and author. She is the Elizabeth A. Long Professor of Law at the University of Michigan Law School, where she has been tenured since 1990, and the James Barr Ames Visiting Professor of Law at Harvard Law School. From 2008 to 2012, she was the special gender adviser to the Prosecutor of the International Criminal Court.