The phrase "cold blood" refers to behaving in a calm and deliberate manner, without being affected by emotions or feelings.
Sentences with «cold blood»
Despite recent press coverage about the violence against international environmental defenders, another prominent figure has been murdered in cold blood. (newsecuritybeat.org)
For coming as close to killing someone in cold blood as you possibly can without actually doing so. (treehugger.com)
But you can't just kill your neighbor in cold blood without formal justice, which would be murder. (religion.blogs.cnn.com)