vociferous - vocabulary

adjective

The quality of making a noisy and vehement outcry.

In 2000 Mr. [Norman] Finkelstein, a vehement critic of Israel and the son of Holocaust survivors, published “The Holocaust Industry: Reflections on the Exploitation of Jewish Suffering,” in which he argued that Jews in Israel and America have conspired to use the Holocaust to oppress the Palestinians and extort money from Germany. Not surprisingly the book caused a sensation, leading to large sales and vociferous criticism.

—Patricia Cohen “A Bitter Spat over Ideas, Israel and Tenure” New York Times, April 12, 2007