the origional aiel used the term in a Robert Jordan book as well, but in a more wordful way
"You killed some one, you are dead to me and the rest of the True Aeil......Turn away from me i wish not to see that face, my son had a face like yours, but alas he is dead to me?
Ethel: Give it a rest, Mortimer.
Boss: That's the dirtiest joke I've ever heard. You have completely wrecked my plans to ask you out on a romantic candle-lit dinner, nail you, and finger guns to our fellow employees. You're dead to me. And you're fired.