δυσμαχητέον
From LSJ
Τραφὲν ὄρεσι καὶ φάραγξιν ἀγρίαις, κήρυξ πέφυκα τῆς λόγου ὑμνῳδίας. Φωνήν μὲν οὐκ ἔναρθρον, εὔηχον δ' ἔχω (Byzantine riddle) → Raised in the mountains and wild ravines, I have become the herald of hymns that are sung. I have no articulate voice...
English (LSJ)
one must fight a losing battle with, ἀνάγκῃ δ' οὐχὶ δ. S.Ant.1106.
Spanish (DGE)
(δυσμᾰχητέον)
hay que luchar en vano c. dat. ἀνάγκῃ δ' οὐχὶ δ. S.Ant.1106.
