When it comes to antonyms for the word "being uncontrollable," many words come to mind. The first word that comes to mind is "manageable." When something is manageable, it means that it is capable of being controlled or handled with ease. Another antonym for being uncontrollable is "tame." When something is tame, it means that it is not wild, and it can be controlled or managed. Other possible antonyms include "disciplined," "restrained," or "governed." Indeed, the antonyms for being uncontrollable are numerous, and the choice of the word will depend on the context in which it is used.