When describing someone who is excessively greedy, the phrase "greedy as a hog" may come to mind. However, there are many other synonyms that can be used to convey the same message. One could say the individual is "rapacious," meaning they have an insatiable desire for wealth or possessions. Alternatively, they may be described as "avaricious," focusing solely on accumulating material goods. Another option is to label them as "voracious," consuming resources at an unsustainable rate. The phrase "piggy" may also be used to describe someone who displays greedy tendencies. Ultimately, the choice of synonym may depend on the context and tone of the conversation.