Gluttonousnesses is an uncommon word, which means excessive or insatiable desire for food or drink. However, there are several synonyms for this word, including overindulgence, voracity, rapacity, greediness, insatiability, and prodigality. All these words connote a sense of excess and craving, which are often associated with negative behaviors. Furthermore, the word gluttonousnesses can also be replaced with an adjective, such as gluttonous, ravenous, or insatiable, to express the same meaning. In conclusion, while gluttonousnesses may not be a common word, there are several synonyms that convey the same sense of excessive craving and consumption.