Febronian UK /fɛˈbɹəʊ.ni.ən/US /fɛˈbɹoʊ.ni.ən/adjective 1noun 1forms 3 adjective1 •Of or relating to Febronianism. noun1 •A supporter of Febronianism. formsFebronians · more Febronian · most Febronian