When it comes to expressing the idea of being "on the confines of" something, there are a variety of synonyms that can be used to convey a similar meaning. Some alternative expressions that could be utilized in this context might include "on the border of," "at the edge of," "near the boundary of," or "adjacent to." Other possibilities might include phrases like "on the fringes of," "along the perimeter of," or "on the outskirts of." Ultimately, the choice of synonym will depend on the specific context of the writing and the desired tone and level of precision in the language being used.