The phrase "used for own ends" refers to the act of exploiting something or someone for personal gain. There are several synonyms that can be used to describe this behavior, including "manipulation," "utilization," "exploitation," "abuse," and "instrumentalization." Manipulation refers to the use of tactics to control or influence someone or something, while utilization denotes the act of using something for a specific purpose. Exploitation and abuse both imply the mistreatment or misuse of someone or something for personal gain, and instrumentalization refers to the act of using something or someone as a tool or means to an end. All of these synonyms convey the negative and unethical nature of using something for one's own ends.