The phrase "more red-blooded" means enthusiastic, passionate, or vigorous. Antonyms for this phrase include apathetic, lethargic, and listless. If someone is described as less red-blooded, they may appear disinterested or lacking in energy. Other antonyms include unenthusiastic, indifferent, and complacent. These words are commonly used to describe individuals who are not motivated and lack the drive to pursue their goals. They may be seen as lazy or unproductive. It is important to note that these antonyms are subjective, and individuals may interpret them differently. Therefore, it is essential to consider the context and tone of the conversation before using any of these words.