The term "under-belly" typically refers to the underside of something, often associated with negative connotations. Antonyms for under-belly might include "topside," "surface," or "top layer," indicating a higher, more positive position. Alternatively, the antonym could be something with a positive connotation, such as "upper-level," "upper-crust," or "upper echelon." These words suggest a more desirable, high-status location or group. Another potential antonym could be "core" or "center," indicating a more central and essential part of something, as opposed to the bottom or underside. Overall, antonyms for "under-belly" highlight different aspects of the physical or symbolic structure of something, contrasting negative connotations with neutral or positive ones.