Nonspatial refers to something that is not related to space, dimension or location. The antonyms for nonspatial include words like spatial, three-dimensional, volumetric, planar, flat, broad, vast, extensive, wide, shallow, plane and low. These words imply a relation to space, dimension or location, and can be used in contrast to nonspatial. For example, a three-dimensional object is the antonym of a nonspatial object. Likewise, broad and vast are antonyms of shallow and plane, respectively. Choosing the right antonym for nonspatial depends on the context of the sentence and the specific meaning that needs to be conveyed.