Antonyms for the term "heap upon" include "take away," "remove," "reduce," "diminish," "deplete," "lessen," "abate," "dwindle," and "minimize." These words describe actions that decrease or eliminate a pile or accumulation, rather than adding to it. They can also denote actions that reduce the overall impact of something. For instance, by removing or reducing the amount of a negative thing, a person is minimizing the harm it could cause. While "heap upon" typically has a positive connotation, antonyms of the term are often used to convey the opposite idea, i.e., taking away something negative or harmful.