The antonyms for the word "more untrammeled" are limited, restricted, controlled, regulated, and constrained. These words indicate a sense of confinement or inhibition. If something is limited, restricted, or controlled, it means that it is subject to rules or boundaries that restrict its potential or freedom. On the other hand, if something is untrammeled, it means that it is free from limitations or restrictions. Therefore, it is important to choose the right antonym depending on the context in which it is being used. By doing so, we can accurately convey the intended meaning and avoid any confusion.