Quick Definition
ἀσφαλῶς Adv safely, securely, assuredly
Strong's Definition
securely (literally or figuratively)
Derivation: adverb from G804 (ἀσφαλής);
KJV Usage: assuredly, safely
UBS Dictionary of the Greek New Testament
advb. | ἀ- + ἀσφαλίζω
21.10 · Danger, Risk, Safe, Save · Safe, Free from Danger
safe, safely, secure, securely pertaining to a state of safety and security, and hence free from danger In ACT 16:23 ἀσφαλῶς does not refer to the safety of the prisoners but to the security with which they were guarded, hence eliminating any danger of their escaping.
31.42 · Hold a View, Believe, Trust · Believe To Be True
worthy of being believed, certainly true, completely believable pertaining to being certain and thus completely believable
UBS Dictionary of the Greek New Testament © United Bible Societies, licensed CC BY-SA 4.0.
Thayer's Greek Lexicon
ἀσφαλῶς, adv., [fr. Hom. down], safely (so as to prevent escape): Mk. xiv. 44; Acts xvi. 23. assuredly: γινώσκειν, Acts ii. 36 (εἰδότες, Sap. xviii. 6).
Mounce Concise Greek Dictionary
ἀσφαλῶς asphalōs 3x
securely, safely; without fail, safely, Mk. 14:44; Acts 16:23; certainly, assuredly, Acts 2:36*
Abbott-Smith Greek Lexicon
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.†
Liddell-Scott-Jones — Greek-English Lexicon
ἀσφαλῶς (asphalōs) — securely. Included with: ἀσφαλός, ὁ, name of a bird, [Refs 5th c.AD+]