The phrase "most buddy buddy" implies a close friendship or camaraderie between two people. However, there are several antonyms that can convey the opposite meaning. Words like distant, aloof, detached, indifferent, and unfriendly can all be used to describe a lack of closeness or warm feelings between individuals. Instead of being buddy buddy, they may be acrimonious, cold, hostile, or indifferent towards each other. Using these antonyms can effectively convey the opposite meaning, highlighting the absence of warmth and intimacy that is typically associated with a close friendship.