αντίπολις

From LSJ

ἀγεωμέτρητος μηδεὶς εἰσίτω → no one ignorant of geometry may enter, let no one ignorant of geometry enter, let no one ignorant of geometry come in

Source

Greek Monolingual

ἀντίπολις, η (Α)
αντίπαλη, εχθρική πόλη.