Quick Definition
ἔκφοβος, ον Adj greatly terrified
Strong's Definition
frightened out of one's wits
Derivation: from G1537 (ἐκ) and G5401 (φόβος);
KJV Usage: sore afraid, exceedingly fear
UBS Dictionary of the Greek New Testament
adjc. | -ον | φοβέω
1 It is possible that ἔκφοβος and ἔμφοβος differ slightly in the intensity of fear, but this cannot be determined from existing contexts.
UBS Dictionary of the Greek New Testament © United Bible Societies, licensed CC BY-SA 4.0.
Thayer's Greek Lexicon
ἔκφοβος, -ov, stricken with fear or terror, exceedingly frightened, terrified: Mk. ix. 6; Heb. xii. 21 fr. Deut. ix. 19. (Aristot. physiogn. 6 [p. 812°, 291; Plut. Fab. 6.)
Mounce Concise Greek Dictionary
ἔκφοβος ekphobos 2x
frightened, horrified, Mk. 9:6; Heb. 12:21*
Abbott-Smith Greek Lexicon
ἔκφοβος, -ον
[in LXX: ἔ. εἶναι for יָגֹר, De 9:19; also I Mac 13:2 * ;]
affrighted, terrified: Mk 9:16, He 12:21.†
Liddell-Scott-Jones — Greek-English Lexicon
ἔκφοβος (ekphobos) — terrified. ἔκφοβ-ος, ον, affrighted, [NT+4th c.BC+]