The antonyms for the phrase "becomes partners" can refer to any action or statement indicating a lack of partnership. For example, words such as "separate," "divorce," "dissolve," "segregate," or "disagree" can express the opposite meanings. Each of these words implies the breaking or ending of the bond between two or more people. Alternatively, terms such as "compete," "oppose," "contradict," or "counteract," also represent the opposite of partnership. These terms all express actions or statements that indicate a level of tension or discord between individuals, rather than cooperation or collaboration. Ultimately, the antonyms for "becomes partners" represent the absence of partnership in its various forms.