G2977
λάθρα
quietly
λάθρᾳ (Att..; in Hom., -ρῃ, Rec. -ρα), adv., [in LXX chiefly for סֵתֶר ;] secretly: Mat.1:19 2:7, Mrk.5:33 (WH, mg.), Jhn.11:28, Act.16:37.† (AS)
The KJV translates G2977 in the following manner:
privily (6x), secretly (2x)
Full Thayer's lexicon entry
λάθρα — láthra
λάθρᾳ (so R G T Tr) (in Homer λάθρῃ, from λανθάνω, λαθεῖν), and L (WH K C (see the latter's Praef., p. 12: and under the word εἰκῇ)) λάθρᾳ (from λαθρος, λάθρᾳ, λαθρον, cf. Passow (especially Liddell and Scott), under the word; Winers Grammar, 47; Buttmann, 69 (61)), adverb secretly: Mat 1:19; Mat 2:7; Joh 11:28; Act 16:37. (From Homer down; the Sept..)
4 occurrences
Matthew (2), John (1), Acts (1)