Quick Definition
suddenly, unexpectedly
Strong's Definition
of a sudden (unexpectedly)
Derivation: from G1537 (ἐκ) and the base of G160 (αἰφνίδιος);
KJV Usage: suddenly
Thayer's Greek Lexicon
ἐξαίφνης (WH ἐξέφνης (except in Act_22:6), see their Appendix, p. 151), adverb (αἰφνης, ἄφνω, ἀφνως suddenly), of a sudden, suddenly, unexpectedly: Mar_13:36; Luk_2:13; Luk_9:39; Act_9:3; Act_22:6. (Homer, et al.; the Sept..)
STRONGS NT 1810: ἐξέφνης [ἐξέφνης, see ἐξαίφνης.]
Mounce Concise Greek Dictionary
ἐξαίφνης exaiphnēs 5x
suddenly, unexpectedly, Mar_13:36 ; Luk_2:13 ; Luk_9:39 ; Act_9:3 ; Act_22:6
Abbott-Smith Greek Lexicon
ἐξ -αίφνης
( WH , ἐξέφνης , exc . Act_22:6 ; v. App ., p. 151, and cf. M , Pr., 35), adv.
( < ἄφνω ),
[in LXX chiefly for H6597 ;]
suddenly Mar_13:36 , Luk_2:13 ; Luk_9:39 , Act_9:3 ; Act_22:6 .†
Moulton & Milligan — Vocabulary of the Greek NT
ἐξαίφνης [page 221]
For the form ἐξαίφνης , which is read by WH only in Act_22:6 (cf. Notes, 2 p. 158), see P Par 51 .8 (B.C. 160) (= Selections, p. 19) καὶ ἐξαί [φνης ] ἀνύγω τοὺς ὀφθαλμούς μου , and PSI III. 184 .5 (A.D. 292) περὶ ἕκτην ὥραν ἐξαίφνης καύματος ἐνόντος πῦρ κτλ . The very fragmentary letter P Giss I. 86 (ii/A.D.) shows ὅτι ἐξέφνης ἀπέστιλας : so P Flor II. 175 .7 (A.D. 255). In Cagnat III. 1145 .4 we have ἐξεφάνης . On the ease with which αι and ε would be interchanged by the scribes, see Proleg. p. 35. MGr ἔξαφνα , ἄξαφνα , ξάφνω , with ξαφνίζω , frighten, surprise.
Liddell-Scott — Intermediate Greek Lexicon
ἐξαίφνης ( e)c-ai/fnhs adverb )[Etym: ἄφνω] adv. "on a sudden", Il. , attic; ἐξ. ἀποθανόντος, "the moment he is dead", Plat.
STEPBible — Tyndale Abridged Greek Lexicon
ἐξ-αίφνης (WH, ἐξέφνης, exc. Act.22:6; see App., p. 151, and cf. M, Pr., 35), adv.
(ἄφνω), [in LXX chiefly for פִּתְאוֹם ;]
suddenly Mrk.13:36, Luk.2:13 9:39, Act.9:3 22:6.†
(AS)