Sponge out is a phrasal verb that refers to the act of soaking up or absorbing liquid from a surface. There are several synonyms that can be used interchangeably with sponge out, depending on the context and tone. Some of these synonyms include mop up, absorb, blot, wipe away, dab, and clean up. Each of these words denotes a specific action and intensity. For instance, mop up is often used to describe a more forceful and thorough cleaning process, whereas dab may suggest a softer, gentler approach. Overall, these synonyms broaden the palette of language learners and provide variety of expressions those working with liquids and chores.