τἀρχαῖον

From LSJ

χρῆσαι κακοῖσι τοῖς ἐμοῖς, εἰ κερδανεῖς → use my shame, if any good

Source

French (Bailly abrégé)

crase p. τὸ ἀρχαῖον.

Greek Monotonic

τἀρχαῖον: κράση αντί τὸ ἀρχαῖον.