“Did you get to see her before she left?” “No, 'more's the pity'.” [=I regret that I didn't get to see her]
It's a 'pity' [='shame'] you can't go. = 'Pity' (that) you can't go. [=I'm sorry that you can't go]
I'll be out of town on that day—a (great) 'pity', since I'd love to see you.
(..) ... amend my original statement to this: Help, will always be given at Hogwarts, To those who deserve it. Do not pity the dead, Harry... Pity the living. And above all... ... all those who live without love. Professor, my mother's Patronus... ... was a doe, wasn't it? (..)2011 Harry Potter and the Deathly Hallows: Part 2
(..) Unlike so many of the others. But she was wrong, I cannot help you! Wait, please! I want to destroy it! They never learn. Such a pity. But, my Lord... Shouldn't we wait? My Lord! Begin! I thought you want to do it. (..)2011 Harry Potter and the Deathly Hallows: Part 2