ὤκιστος
From LSJ
μεγάλα ὠφελήσεσθε πρὸς ἱστορίαν τῶν κοινῶν → that will be of great benefit to you in order to understand public affairs
English (LSJ)
old Sup. of ὠκύς (q. v.).
Greek (Liddell-Scott)
ὤκιστος: ὠκίων, ἀνώμαλον ὑπερθ. καὶ συγκρ. τοῦ ὠκύς.