Lexical Definition

‎ἐπισφαλής‎ episphalḗs (ep-ee-sfal-ace') dangerous/unsteady ^G:A
from a compound of ‎ἐπί‎ and (to trip)

dangerous.

• figuratively, insecure

Abbott-Smith

** ἐπισφαλής, -ές (< σφάλλω, to cause to fall), [in LXX: Wi 9:14 (cf. -ῶς, ib. 4:4) * ;]
1. prone to fall (Plat.).
2. dangerous (Hipp., Plut., al.): Ac 27:9.†

Abbott-Smith References

Liddell-Scott-Jones

ἐπισφαλής-ής, ές,

(σφάλλομαι) prone to fall, unstable, precarious, τὰ μεγάλα πάντα ἐπισφαλήςῆ [Refs 5th c.BC+]; ἐπισφαλήςές [ἐστι] [Refs 4th c.BC+]

__II (σφάλλω) making to fall, misleading, εἰς βλάβην [Refs 1st c.AD+]
__II.2 dangerous, νόσημα [Refs 5th c.BC+]: superlative -εστάτη, χώρα [Refs 2nd c.AD+]; ἐπισφαλήςές [ἐστι] παρακοῦσαι [Refs 4th c.BC+] adverb -λῶς, ἔχειν, διακεῖσθαι, to be in danger, [LXX+2nd c.BC+]: superlative -έστατα, περᾶσαι [Refs 1st c.AD+]
__II.3 dubious, adverb comparative -έστερον Aristeas[Refs]