The term "supra-mundane" refers to something that is beyond or outside the physical world. Some antonyms for this word include "mundane", which means ordinary or commonplace, as well as "earthly", "material", and "physical". These words refer to things that exist within the realm of the physical world and are subject to its laws and limitations. Other antonyms for "supra-mundane" include "mortal", "fleeting", and "transient", which all suggest a sense of impermanence or ephemerality. In general, antonyms for "supra-mundane" describe things that are more concrete, tangible, and temporal, rather than abstract, ethereal, and timeless.