What legal term describes a person who is wholly subject to the will of another?

The term that describes a person who is wholly subject to the will of another is "slave." This designation conveys a complete lack of autonomy and freedom, indicating that the individual is under the absolute control of another person. In historical and legal contexts, slavery refers to a situation where individuals are owned by others and have no personal rights or freedoms. This condition contrasts sharply with the other terms provided.

The term "worker" typically refers to someone who performs tasks for compensation, but they maintain a degree of independence regarding their work. "Servant," while it can imply a subordinate role, often implies a level of employment with negotiated terms, allowing for a degree of autonomy. "Volunteer" denotes someone who willingly provides services without expectation of payment, emphasizing personal choice and agency. These distinctions underscore the unique and severe implications associated with the term "slave," which captures the essence of being entirely subject to another's will without any semblance of freedom or choice.