cold + blood

source: By Arno / Coen - www.nutscode.com, CC BY-SA 3.0

1. (of a kind of animal) having a body temperature varying with that of the environment; poikilothermic.

〘生物〙 変温の, 冷血の〈動物〉(↔ warm-blooded)

2. without emotion or pity; deliberately cruel or callous:

｟非難して｠ 冷酷な, 無情な, 残忍な〈殺人者･殺人など〉

e.g. a cold-blooded murder.

cold-bloodedly | ˌkōldˈblədidlē | adverb

cold-bloodedness | ˈkōldˌblədədnəs | noun