The antonyms for the word "most joining" can be "least connected," "separate," "disparate," "distant," "unrelated," "isolated," "detached," "distinct," "diverse," and "independent." These words indicate a lack of connection or unity between different entities or elements. When we talk about something being "most joining," we are referring to its ability to bring different things or people together. On the other hand, when we talk about its antonyms, we are highlighting the opposite characteristic, i.e., the ability to keep things apart or maintain distance. Using these antonyms effectively can help us express ideas and concepts more precisely and convey their intended meaning accurately.