1. adjectiveSomeone who is cold-blooded does not show any pity or emotion.
[disapproval] ...a cold-blooded murderer.
This was a brutal and cold-blooded killing.
cold-bloodedly graded adverb [usually ADVERB with verb]
2. adjectiveCold-blooded animals have a body temperature that changes according to the surrounding temperature. Reptiles, for example, are cold-blooded.
More Synonyms of cold-blooded