be senseless

a primitive root; to wilt; generally, to fall away, fail, faint; figuratively, to be foolish or (morally) wicked; causatively, to despise, disgrace; disgrace, dishounour, lightly esteem, fade (away, -ing), fall (down, -ling, off), do foolishly, come to nought, [idiom] surely, make vile, wither.