When it comes to having authority or control over a situation, there are many synonyms for being in charge. Some commonly used alternatives include being in command, being the boss, being the leader, having power, being the head honcho, having the upper hand, being in control, holding the reins, and being the captain of the ship. Additionally, some more creative options may include being the chief, running the show, calling the shots, having the say-so, being in the driver's seat, being at the helm, holding sway, having dominion, or being the top dog. Regardless of which synonym is used, the meaning remains the same, that one person is leading and making the decisions.