OT.filter - dby despair:

dby@1Samuel:27:1 @ And David said in his heart, I shall now perish one day by the hand of Saul: there is nothing better for me than that I should speedily escape into the land of the Philistines; and Saul will despair of me to seek me any more within all the limits of Israel, and I shall escape out of his hand.

dby@Ecclesiastes:2:20 @ Then I went about to cause my heart to despair of all the labour wherewith I had laboured under the sun.