cold-blood·​ed ˈkōl(d)-ˈblə-dəd How to pronounce cold-blooded (audio)
: done or acting without consideration, compunction, or clemency
cold-blooded murder
: matter-of-fact, emotionless
a cold-blooded assessment
: having cold blood
specifically : having a body temperature not internally regulated but approximating that of the environment
or coldblood : of mixed or inferior breeding
: noticeably sensitive to cold
cold-bloodedly adverb
cold-bloodedness noun

Examples of cold-blooded in a Sentence

a cold-blooded criminal who never once showed an ounce of mercy to his victims the cold-blooded selfishness shown by the miser when confronted by people in need a cold-blooded assessment of the situation showed that the company needed either to lay off workers or go bankrupt he may not be as fancy as the other horses they own, but that cold-blooded gelding is safe and gentle
Recent Examples on the Web Look into my eyes by Pete Burford Being cold-blooded, damselflies and other insects cannot generate their own body heat. Carlyn Kranking, Smithsonian Magazine, 12 July 2024 Snakes are cold-blooded and use the temperature of their environment to regulate their bodies. Brenna Gauchat, The Arizona Republic, 5 July 2024 Leopold and Loeb’s cold-blooded murder of a fourteen-year-old fascinated the nation and showcased new ways of bringing science to bear in criminal cases. The Editors, JSTOR Daily, 2 July 2024 These were the actions of a cold-blooded, calculated killer. Christine Pelisek, Peoplemag, 2 July 2024 See all Example Sentences for cold-blooded 

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'cold-blooded.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History

First Known Use

1606, in the meaning defined at sense 2

Time Traveler
The first known use of cold-blooded was in 1606

Dictionary Entries Near cold-blooded

Cite this Entry

“Cold-blooded.” Dictionary, Merriam-Webster, Accessed 25 Jul. 2024.

Kids Definition


: lacking or showing a lack of natural human feelings
a cold-blooded criminal
: having a body temperature not regulated by the body and close to that of the environment
: sensitive to cold
cold-bloodedly adverb

Medical Definition


cold-blood·​ed ˈkōl(d)-ˈbləd-əd How to pronounce cold-blooded (audio)
: having a body temperature not internally regulated but approximating that of the environment : poikilothermic
cold-blooded amphibians and reptiles
cold-bloodedness noun

More from Merriam-Webster on cold-blooded

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