Strong's G1568 — ἐκθαμβέω (verb)
ekthambeo (ek-tham-beh'-o) v.
1. to astonish utterly
[from G1569]
KJV: affright, greatly (sore) amaze 
Root(s): G1569 
Hebrew root: ἔκθαμβος
Occurrences: 4