Knowing what's going on is an important aspect of communication and understanding. There are several synonyms that can be used in place of "know what's going on". These include being updated, being informed, being aware, staying in the loop, having knowledge of, having insight into, being up-to-date, being clued-in, being abreast of, and having a clear picture of. To truly know what's going on, it's important to actively seek out information, ask questions, and pay attention to current events and conversations. By using these synonyms and staying informed, individuals can make informed decisions and better participate in their personal and professional lives.