Claremonster noun1 •(US, slang) A contributor to the Claremont Review of Books, a quarterly review of politics and statesmanship published by the conservative Claremont Institute.The “Claremonsters'” (Michael Anton, Thomas Klingenstein, John Eastman and Charles Kesler, who are affiliated with the Claremont Institute; Larry Arnn of Hillsdale College, and, yes, Vance). — 2025 formsClaremonsters