Once dead, they are unable to spread and can detach.

Once dead, their heads were removed and placed on poles as a warning to future pirates.

Once dead, treatment obviously is no longer called for.

"You see them dead in the street once in a while."

Yet, once dead he was no longer an asset to her but a problem that needed to be disposed of, literally.

Once dead, we have no means to bring them back.

And death once dead, there's no more dying then.

Once dead, the legend takes on its own momentum.

He who be once dead may not live again.

It could be eaten, once dead, and its blood supposedly tasted sweet like honey.