ἀργυράγχη
From LSJ
ὁ δ' εὖ ἔρδων θεοὺς ἐλπίδι κυδροτέρᾳ σαίνει κέαρ → but he who does well to the gods cheers his heart with a more glorious hope
English (LSJ)
ἡ, (formed after κυνάγχη)
A silver-quinsy, which Demosthenes was said to have, when he abstained from speaking on the plea of quinsy, but really because he was bribed, Demad.Fr.5 S., Plu.Dem.25.
Greek (Liddell-Scott)
ἀργῠράγχη: ἡ, ἐσχηματίσθη σκωπτικῶς κατὰ τὸ κυνάγχη· ἐλέχθη δὲ περὶ τοῦ Δημοσθένους ὅτι δῆθεν ἔνεκα δωροδοκίας προσεποιήθη ὅτι εἶχε συνάγχην καὶ δὲν προσῆλθεν ὅπως ἀγορεύσῃ, «ἀργυράγχη, ὡς Δημάδης σκώπτων Δημοσθένη, συνάγχην λέγοντα εἰλῆφθαι» Πολύδ. Ζ΄, 104, Πλουτ. Δημ. 25.