zythum/ˈzaɪθəm/EtymologyFrom Latin zȳthum, from Ancient Greek ζῦθος (zûthos).zythum means an unfermented kind of Egyptian malt beer. Lexicurio rates it Sui generis — a strength score of 87 out of 100.nounAn unfermented kind of Egyptian malt beer.“Cartwright looked up from the Chamber’s^([sic]) Encyclopaedia […] One day he would get right to the end, to zythum. Not that he needed to. He had already peeped ahead and seen that it was a kind of ancient Egyptian beer, much recommended by Diodorus Siculus – whoever he was.”