The antonyms for the word "part world" vary depending on the context. If we are talking about a person being involved in something or being present, antonyms would include absent, missing, or unavailable. On the other hand, if we are referring to something that is complete, antonyms would be incomplete, unfinished, or fragmented. If we are talking about something that is exclusive or limited, antonyms could be inclusive or unrestricted. Finally, if we are referring to a physical object, antonyms would include whole, complete, or undivided. It is important to consider the context in order to choose the appropriate antonym for the word "part world.