There is no one-word antonym for "cold-bloodednesses," as it is a complex concept that encompasses a range of emotions and behaviors. Some possible antonyms for aspects of cold-bloodednesses include compassion, empathy, kindness, gentleness, warmth, and sensitivity. Whereas someone who is cold-blooded may lack feeling or concern for others, someone who embodies these antonyms is characterized by their ability to understand and respond to the needs and feelings of those around them. These antonyms stand in contrast to the detached, aloof, or callous behavior often associated with cold-bloodednesses, and they highlight the importance of emotional connectedness and humaneness in our interactions with others.