προεγγυάομαι
From LSJ
Πάντα ταῦτα ἐπείρασα ἐν τῇ σοφίᾳ: εἶπα Σοφισθήσομαι, καὶ αὐτὴ ἐμακρύνθη ἀπ' ἐμοῦ· κτλ. (Εcclesiastes 7:23f., LXX version) → I tried to give proof in wisdom of all those things; I said, I will be wise, but that wisdom was far from me ...
English (LSJ)
A furnish security or guarantee, Milet.3No.138.42 (iii B.C.):—Pass., App.Fr.1.1.
