cold-blooded
cold + blood
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source: By Arno / Coen - www.nutscode.com, CC BY-SA 3.0
adjective
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.
DERIVATIVES
cold-bloodedly | ˌkōldˈblədidlē | adverb
cold-bloodedness | ˈkōldˌblədədnəs | noun