The word "shackler" refers to someone who enslaves or restrains someone else against their will. There are several synonyms for this word, including captor, oppressor, enslaver, bondage master, and captivator. These words all denote a person or group who exercises control and authority over others, typically through physical force or coercion. Other related terms might include tormentor, tyrant, despot, or dictator, which emphasize the oppressive or abusive nature of the person in question. Regardless of the specific term used, the concept of shackling carries connotations of loss of freedom, autonomy, and self-determination, and implies a fundamental violation of basic human rights.