Thompsonian UK /tɒmpˈsəʊ.ni.ən/US /tɑmpˈsoʊ.ni.ən/ adjective2 •Of or relating to Edward Palmer Thompson (1924–1993), English historian, writer, socialist and peace campaigner. •Of or relating to Hunter S. Thompson (1937–2005), American journalist and author who founded the gonzo journalism movement. formsmore Thompsonian · most Thompsonian