From Longman Dictionary of Contemporary EnglishRelated topics: Biology, Animalscold-bloodedˌcold-ˈblooded adjective1CRUELnot showing or involving any emotions or pity for other people’s suffering
a cold-blooded killercold-blooded murder► see thesaurus at cruel2HBa cold-blooded animal, such as a snake, has a body temperature that changes with the temperature of the air or ground around it → warm-blooded —cold-bloodedly adverb —cold-bloodedness noun [uncountable]Examples from the Corpuscold-blooded• I couldn't do anything so ridiculous as streakingcold-blooded!• Rune had already demonstrated to her that he was far from cold-blooded.• Apparently their rhythmdepended on their body temperature, which is to be expected in cold-blooded animals.• Overcrowded with 100,000 cold-bloodedbees, the hive had become a warm-bloodedorganism.• The honey-bush employs the cold-bloodedlizards as its thermometers instead.• Professor Herbert argues that such an arrangement is neither cold-blooded nor out of keeping for a family.• Its cold-blooded use by cops facing no threat to themselves is plainly inhumane.