Cold-blooded

“Dead animals radiate heat,” he said. “When you take one down, you can feel it pouring from the wounds. But not this thing.” / “What does that mean?” she asked. / “Cold-blooded maybe, or colder-blooded than we’re used to.” / “Might explain why the heat sensors have trouble picking them up,” Danielle said.

Here were aſſembled that great philoſopher Mr. Subtile, the coldeſt-blooded metaphyſician of the age.

No Spaniard is ever put out, although he maddens in a moment at the slightest personal affront, for blood boils without fire, “la sangre hierve sin fuego.” He takes these things coolly, which more phlegmatic, colder-blooded foreigners seldom do.

“And as for those foolish people,” said Quicksilver, with his mischievous smile, “they are all transformed to fishes. There needed but little change, for they were already a scaly set of rascals, and the coldest-blooded beings in existence.[…]”

[…] well remembering the order he had given to generals in command of the different divisions of his army, to shoot all the prisoners that fell into their hands, which had resulted in the coldest-blooded murder of the brave Fannin, and three hundred and thirty men at Goliad, on Sunday, March 27th, who were promised, if they would surrender, to be treated kindly as prisoners of war, and to be sent in vessels at once to the United States.

Sir Wilton regarded Lady Ann as the coldest-blooded and most selfish woman in creation, and certainly she was not less selfish and was colder-blooded than he.

That’s what it looks like Arya’s planning to do at the campfire. For much of the scene, she’s weighing her options. She could take those guys. She could get to them before they got their swords, and she could swipe their gold and their meal. It would be something like what the Hound did to those peasants. At the time Arya was upset at him for it. But now Arya’s a cold-blooded killer.