Strong's Concordance

Original word: κατάνυξις
Transliteration: katanuxis
Definition (short): stupor
Definition (full): stupefaction

NAS Exhaustive Concordance

Word Origin: from katanussó
Definition: stupefaction
NASB Translation: stupor (1).
NAS Exhaustive Concordance of the Bible with Hebrew-Aramaic and Greek Dictionaries.
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Strong's Exhaustive Concordance

From katanusso; a prickling (sensation, as of the limbs asleep), i.e. (by implication, (perhaps by some confusion with neuo or even with nux)) stupor (lethargy) -- slumber.

see GREEK katanusso

see GREEK neuo

see GREEK nux

KJV: (According as it is written, God hath given them the spirit of slumber, eyes that they should not see, and ears that they should not hear;) unto this day.
NASB: just as it is written, "GOD GAVE THEM A SPIRIT OF STUPOR, EYES TO SEE NOT AND EARS TO HEAR NOT, DOWN TO THIS VERY DAY."