Strong’s Greek
G1769 — enneos
The entry below is Strong’s own definition (1890, public domain), and every verse where the word occurs.
ἐνεός
enneos — pronounced en-neh-os'
from 1770; dumb (as making signs), i.e. silent from astonishment:--speechless. see GREEK for 1770
1 occurrence in the KJV.
Acts 9:7
And the men which journeyed with him stood speechless, hearing a voice, but seeing no man.