The word "voluminosities" refers to things that are large or bulky. There are several synonyms that can be used to describe something that is voluminous, such as "bulky", "massive", "substantial", "ponderous", and "cumbersome". Other synonyms could include "large", "heavy", "grand", "oversized", "gigantic", "immense", and "jumbo". It is important to choose the right synonym depending on the context and the object being described. For instance, something that is "bulky" might be heavy and hard to move, while something that is "substantial" might be significant in terms of its value or importance.