The term "de-marked" implies the removal of a boundary or limit. Antonyms for this term would suggest the presence or creation of boundaries or limits. These antonyms could include terms such as "bounded," "confined," "restricted," "circumscribed," or "defined." These words describe the act of specifying or marking out specific limits, both physical and metaphorical. For example, bounded might suggest a specific area or property line, while circumscribed could suggest a physical or metaphorical limit to one's personal freedom or abilities. By exploring these antonyms, one can gain a better understanding of the concept of "de-marking" and its opposite, marking or defining boundaries.