imperceptibly
From LSJ
διὸ καὶ μεταλάττουσι τὴν φυσικὴν χρῆσιν εἰς τὴν παρὰ φύσιν αἱ δοκοῦσαι παρθένοι τῶν εἰδώλων → therefore those professing to be virgins of the idols even change the natural use into the unnatural (Origen, commentary on Romans 1:26)
English > Greek (Woodhouse)
adverb
P. and V. λάθρα, λαθραίως (rare B.).
little by little: P. κατ' ὀλίγον, κατὰ βραχύ; see gradually.
do a thing imperceptibly: P. and V. λανθάνειν ποιῶν τι, V. λήθειν ποιῶν τι.
