The phrase "is in control" can be expressed using a variety of synonyms and related terms to convey similar meanings. For example, one might say that someone is "in charge," "leading," or "managing" a situation to indicate a sense of authority and responsibility. Other options might include words like "dominant," "supervising," or "regulating," which emphasize the idea of being in a position of power or influence. Alternatively, someone might be described as "running the show," "calling the shots," or "in the driver's seat," which suggest a more active and decisive role. Whatever the language used, all of these terms point to a sense of control and direction.