Dicionário

κρυφῇ

G. Abbott-Smith's A Manual Greek Lexicon of the New Testament

κρυφῇ

(prop. -ῆ, Rec.; later spelling is due to assimilation to dat.; cf. εἰκῆ),

adv.,

[in LXX chiefly for סתר;]

secretly, in secret: Eph 5:12.†