Lexical Definition

‎ἐκπλήσσω‎ ekplḗssō (ek-place'-so) be astonished G:V
from ‎ἐκ‎ and ‎πλήσσω‎

amaze, astonish.

Usage: 6 forms in 14 verses
Form Translated As     In Verse(s)
ἐξεπλήσσοντο they were astonished Mark.1.22Mark.7.37Mark.10.26Luke.4.32
were astonished Matt.7.28Matt.19.25Matt.22.33Mark.6.2Luke.9.43
ἐξεπλήσσετο was astonished Mark.11.18
ἐξεπλάγησαν they were astonished Luke.2.48
ἐκπλησσόμενοσ being astonished Acts.13.12
ἐκπλήσσεσθαι to be astonished Matt.13.54
εκπλαγήσ you should be overwhelmed LXX.Eccl.7.16

Abbott-Smith

ἐκ-πλήσσω (Attic -ττω, Ac 13:12), [in LXX: (pass.) Ec 7:16, (שָׁמֵם hithp.), Wi 13:4, II Mac 7:12, IV Mac 8:4 17:16 * ;]
1. prop., to strike out, drive away.
2. to strike with panic or shock, to amaze, astonish: pass., Mt 13:54 19:25, Mk 6:2 7:37 10:26, Lk 2:48; seq. ἐπί, c. dat. rei, Mt 7:28 22:33, Mk 1:22 11:18, Lk 4:32 9:43, Ac 13:12.†
SYN.: " πτωεῖν, to terrify, agitate with fear;
τρεμεῖν, to tremble, predominantly physical;
φοβεῖν, to fear, "the general term," Thayer;
cf. also φρίσσω, to shudder, and v.s. δειλία

Abbott-Smith References

Book Refs
Ecclesiastes 7:16
Matthew 7:28 · 13:54 · 19:25 · 22:33
Mark 1:22 · 6:2 · 7:37 · 10:26 · 11:18
Luke 2:48 · 4:32 · 9:43
Acts 13:12

Liddell-Scott-Jones

ἐκπλήσσω,

Attic dialect ἐκπλήττω, strike out of, drive away from, expel, ἐκ δ᾽ ἔπληξέ μου τὴν αἰδῶ [Refs 4th c.BC+]; ὃς (i.e. κεραυνὸς) αὐτὸν ἐξέπληξε τῶν.. κομπασμάτων[Refs 5th c.BC+]: absolutely,drive away, τέρψις τὸ λυπηρὸν ἐκπλήσσει [Refs 5th c.BC+]

__II drive out of one's senses by a sudden shock, amaze, astound, [ἐκπλήσσων.. 5th c.BC: Antipho Orator 2.1.7; κακοὶ εὐτυχοῦντες ἐκπλήσσουσί με “Tragica Adespota” 465 ">Refs 8th c.BC+]; μ᾽ ἐκπλήσσει λόγου frightens me in speaking, [Refs 5th c.BC+] — in this sense most frequently in aorist 2 passive, Epic dialect ἐξεπλήγην (see. below), Attic dialect ἐξεπλάγην [] (also aorist I ἐξεπλήχθην [Refs]: perfect participle ἐκπεπληγμένος [Refs 5th c.BC+]; to be panic-struck, amazed, especially by fear, ἐκ γὰρ πλήγη φρένας [Refs 8th c.BC+]: with participle, ἐκπεπληγμένον κεῖνον βλέποντες [Refs 5th c.BC+]; ἐκπλαγῆναί τινι to be astonished at a thing, [Refs 5th c.BC+] to be struck with panic fear of.., [Refs 5th c.BC+]
__II.2 generally, of any sudden, overpowering passion, to be struck with desire, [Refs 5th c.BC+]; with love, [Refs 5th c.BC+]; χαρᾷ, ἡδονῇ, [Refs 5th c.BC+]; with admiration, [Refs 5th c.BC+]
__II.3 εἰς ὁμολογίαν ἐκπλήττειν frighten one into.., falsa lectio in [Refs 2nd c.BC+]