The phrase "swallow whole" is commonly used to describe the act of consuming something entirely and without chewing. However, there are several synonyms that can be used to express the same meaning, such as "devour," "engulf," "gobble up," "ingest," "consume," and "ingurgitate." These words are effective in describing situations where something is rapidly and completely absorbed or devoured, whether it be food, liquids or even emotions. The usage of synonymous terms not only adds variety to writing but also enhances the overall impact and vividness of a particular situation.