This word is used in its proper sense in Deut. 28:34, Deut. 28: John 10:20, John 10: 1-Cor 14:23. It also denotes a reckless state of mind arising from various causes, as over-study (Eccl. 1:17;2:12), blind rage (Luke 6:11), or a depraved temper (Eccl. 7:25;9:3; 2-Pet 2:16). David feigned madness (1-Sam 21:13) at Gath because he "was sore afraid of Achish."