Quick Definition
suddenly
Strong's Definition
unawares, i.e. unexpectedly
Derivation: adverb from G852 (ἀφανής) (contraction);
KJV Usage: suddenly
Thayer's Greek Lexicon
ἄφνω, adverb (akin to αἰφνης, see in αἰφνίδιος above), suddenly: Act_2:2; Act_16:26; Act_28:6. (the Sept.; (Aeschylus), Thucydides and subsequent writings.)
Mounce Concise Greek Dictionary
ἄφνω aphnō 3x
suddenly, unexpectedly, Act_2:2 ; Act_16:26 ; Act_28:6
Abbott-Smith Greek Lexicon
ἄφνω ,
adv .,
[in LXX for H6597 ;]
suddenly: Act_2:2 ; Act_16:26 ; Act_28:6 .†
Liddell-Scott — Intermediate Greek Lexicon
ἄφνω "unawares, of a sudden", Eur. , Thuc. ; cf. ἐξ-αίφνης.
STEPBible — Tyndale Abridged Greek Lexicon
ἄφνω
adv., [in LXX for פִּתְאוֹם ;]
suddenly: Act.2:2 16:26 28:6.†
(AS)