The term 'sponge up' can be broken down into three separate words: SOP (3 letters), BLOT (4 letters), and ABSORB (6 letters). SOP is an acronym for Standard Operating Procedure, which is a set of instructions that outlines how to perform a task. BLOT is a verb meaning to soak up liquid with a cloth or paper towel. Finally, ABSORB is a verb meaning to take in or soak up something, such as a liquid or sound. Together, these three words describe the act of soaking up a liquid with a cloth or paper towel.