The word "un-shackled" means to be free from restraint or bondage, but there are several antonyms that suggest the opposite. One antonym for this word might be "bound," meaning restricted or tied up. Another antonym could be "constricted," meaning limited or restricted in movement. Additionally, synonyms like "restricted," "inhibited," and "controlled" could all be considered antonyms of un-shackled. These words suggest a lack of freedom or autonomy, and represent the opposite of the sense of liberation conveyed by the term un-shackled. In short, there are many words that act as antonyms for unshackled, all of which convey feelings of constraint, captivity, or control.