When looking for synonyms for the phrase "acted for," there are several options to choose from, depending on the context. Some possible alternatives include represented, worked on behalf of, advocated for, spoke for, participated in, stood in for, served as an agent for, and functioned as a proxy. These terms can be used in various settings, such as in legal matters, business deals, negotiations, and even in personal relationships. Ultimately, the choice of synonym would depend on the intended meaning and the tone of the communication. Regardless of the chosen terms, it's important to remember that every action we take has consequences, and how we choose to act for others can have a lasting impact.