3 adjectives to describe euthanasias

Yet in his case he had days of that merciful euthanasia, the wonderful ease from pain that sometimes lasts for days before the end.

But wonders, as we all know, generally ensconce themselves in some snug theory, and die by a kind of pleasant euthanasia; and so it was with this wonder of ours.

But it would be much more melodious and fitting an end than any of the sublime euthanasias which his enemies provide for him.

3 adjectives to describe  euthanasias