Abbott-Smith Manual Greek Lexicon
ἐξ-αίφνης (G1810)
5 ἐξ-αίφνης (WH, ἐξέφνης , exc. Ac 22:6 ; v. App., p. 151, and cf. M, Pr. , 35), adv. ( ἄφνω ), [in LXX chiefly for פִתְאׄם ;] suddenly Mk 13:36 , Lk 2:13 9:39 , Ac 9:3 22:6 .†
G. Abbott-Smith, A Manual Greek Lexicon of the New Testament (1922) — public domain