The phrase "be at service" refers to being available to assist or help someone. Antonyms for this phrase include antipathy, antagonism, disfavor, hostility, and opposition. These words describe negative feelings or actions towards another person, indicating a lack of willingness to be of service. Being at service involves being kind, supportive, and helpful, while antonyms suggest the opposite. People who are at service are usually appreciated and valued, while those who exhibit antonyms are often seen as difficult or uncooperative. It's important to be aware of how our behavior and attitudes affect others, and strive to cultivate a positive, service-oriented mindset.