Lexical Definition

‎ἐννεός‎ enneós (en-neh-os') speechless G:A
from ‎ἐννεύω‎

speechless.

Usage: 3 forms in 3 verses
Form Translated As     In Verse(s)
ἐνεοί speechless Acts.9.7
ενεόν dumb LXX.Prov.17.28
ενεοί dumb LXX.Isa.56.10

Abbott-Smith

ἐνεός (Rec. ἐνν-), -οῦ, ὁ [in LXX: Is 56:10 (אִלֵּם), Ep. Je41; ἐ. ποιεῖν, Pr 17:28 * ;]
dumb, speechless: Ac 9:7.†

Abbott-Smith References

Book Refs
Proverbs 17:28
Isaiah 56:10
Acts 9:7

Liddell-Scott-Jones

ἐννεός

(in codices sometimes ἐννεός [NT], , όν, dumb, speechless, frequently joined with κωφός, as [LXX+5th c.BC+] deaf and dumb, as in [Refs 5th c.BC+] adverb -εῶς uncertain reading in Oracle texts cited in [Refs 2nd c.AD+]

__2 senseless, stupid, ἀπείρους καὶ . [Refs 5th c.BC+]
__3 of things, useless, [Refs 5th c.BC+]
__4 dumbfounded, astonished, εἱστήκεισαν .

LSJ Scripture Refs: Acts.9.7LXX.Isa.56.10