When we talk about being within control, the synonym that comes to mind is "manageable." However, there are several antonyms that we can use to convey the opposite meaning. Some of the antonyms for being within control are uncontrollable, unruly, wild, chaotic, and ungovernable. While being within control implies a sense of order, discipline, and predictability, its antonyms suggest the opposite: a lack of control, unpredictability, and chaos. For example, if we say that a classroom is ungovernable, it means that the students are unruly, disobedient, and difficult to manage. Hence, antonyms can help us express shades of meaning that broaden our vocabulary and make our language more nuanced.