[κατάνυξις] from G2660; a prickling (sensation, as of the limbs asleep), i.e. (by implication, (perhaps by some confusion with G3506 or even with G3571)) stupor (lethargy)
Usages throughout the bible
Romans 11:8
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(According as it is written, God hath given them the spirit of slumber, G2659 eyes that they should not see, and ears that they should not hear;) unto this day.