This thing is no more. It has ceased to be. It's expired and gone to meet its maker. It's a stiff. Bereft of life, it rests in peace. Its metabolic processes are now history. It's off the twig. It's kicked the bucket, shuffled off this mortal coil, run down the curtain and joined the choir invisible. This is an ex-thing.
But here's a similar thing. Praise be.