προαποδότης
From LSJ
ἄλογον δὴ τὸ μήτε μάχης ἄρξασθαι μήτε τοὺς φίλους φυλάξαι, ἐὰν ὑπό γε τῶν βαρβάρων ἀδικῆσθε → It is irrational neither to begin battle nor to guard the friends, if you are ever wronged by the foreigners
English (LSJ)
ου, ὁ,
A one who renders payment first, i.e.surety, SIG2845(Delph.), JHS113.343 (Aetol.).
Greek (Liddell-Scott)
προαποδότης: -ου, ὁ, ὁ πρότερον προδότης, Συλλ. Ἐπιγρ. 1756. 6. ΙΙ. ὁ πρότερον πωλήσας, Ἐπιγρ. Αἰτωλ. ἐν Hell. J. τ. 13, σ. 343.