unsubstantiated
From LSJ
εἰς πέλαγος σπέρµα βαλεῖν καὶ γράµµατα γράψαι ἀµφότερος µόχθος τε κενὸς καὶ πρᾶξις ἄκαρπος → throwing seeds and writing letters at sea are both a vain and fruitless endeavor
English > Greek (Woodhouse)
adjective
unattested: P. ἀμάρτυρος. V. ἀμαρτύρητος.
bare, without proof: P. ψιλός (Dem. 830).