"Mounded over" is a phrase that means something has been covered or buried in a pile or mound. Synonyms for this phrase include buried, covered, heaped, piled, and stacked. Other related words that can also be used to describe this action include accumulated, amassed, heaped up, and banked up. These words can be used in different contexts to describe various situations, from describing a pile of earth covering a grave site to talking about a pile of books stacked on a desk. Whatever the situation, these synonyms provide a way to communicate the idea of something being heaped or piled up.