Abbott-Smith Manual Greek Lexicon
ἀσφαλῶς (G806)
8 ἀσφαλῶς , adv. , [in LXX: Ge 34:25 ( בֶּטַח ), To 6:4 , Wi 18:6 , Ba 5:7 , I Mac 6:40 , III Mac 7:6 *;] safely : Mk 14:44 , Ac 16:23 ; assuredly : Ac 2:36 .†
G. Abbott-Smith, A Manual Greek Lexicon of the New Testament (1922) — public domain