Reaccumulation refers to the process of gathering again into a mass or group. There are several synonyms for this word such as accumulation, aggregation, amassment, collection, gathering, pile-up, and buildup. These words are commonly used in financial terms such as the reaccumulation of stocks or the accumulation of wealth. In construction, it can refer to the buildup of debris or waste that needs to be cleared. In agriculture, it can refer to the accumulation of crops or harvest. In general, the synonyms for the word reaccumulation signify the act of gathering or collecting something into a larger quantity.