perduellion/ˌpɜː(ɹ)djuˈɛli.ən/perduellion means treason. Lexicurio rates it Sui generis — a strength score of 87 out of 100.perduellion is pronounced /ˌpɜː(ɹ)djuˈɛli.ən/.EtymologyLatin perduellio.nountreason