δυσαύχενος
From LSJ
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
Spanish (DGE)
-ον
1 malo de llevar al cuello, difícil de aguantar ζυγός Rom.Mel.55.κβʹ.2.
2 que apenas dobla la cerviz fig. altanero φύσις Rom.Mel.80.ιδʹ.4.