μοῦνοι Ἑλλήνων δὴ μουνομαχήσαντες τῷ Πέρσῃ → alone of all Greeks we met the Persian singlehandedly, alone of all Greeks having fought singlehanded with the Persians
-ονprob. forma acuñada como etim. de ἀκίβδηλος no escondido, franco, EM α 660.