/ Thesaurus / S Synonyms of sponge up Find synonyms for: Verb1. sponge up, absorb, suck, imbibe, soak up, sop up, suck up, draw, take in, take upusage: absorb as if with a sponge; "sponge up the spilled milk on the counter"WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: eureka Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language