G1810
ἐξαίφνης
suddenly
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)
The KJV translates G1810 in the following manner:
suddenly (10x)
Full Thayer's lexicon entry
ἐξαίφνης — exaíphnēs
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.]
5 occurrences
Mark (1), Luke (2), Acts (2)