Abbott-Smith Manual Greek Lexicon
ἔκφοβος (G1630)
2 ἔκφοβος , -ον [in LXX: ἔ. εἶναι for יָגֹר , De 9:19 ; also I Mac 13:2 * ;] affrighted, terrified : Mk 9:16 , He 12:21 .†
G. Abbott-Smith, A Manual Greek Lexicon of the New Testament (1922) — public domain