The phrase "use for one's own ends" refers to the act of exploiting or manipulating someone or something for personal gain. There are several synonyms for this phrase, including "exploit," "manipulate," "utilize," "harness," "milk," "leverage," "capitalize on," "take advantage of," "profit from," "monetize," and "dominate." Each of these terms implies a degree of self-interest and a willingness to prioritize one's own goals above the well-being of others. Whether in business, politics, or personal relationships, using others for one's own ends is a tactic that can lead to success, but also risks damaging one's reputation and relationships in the long run.