/ Thesaurus / S Synonyms of slim down Find synonyms for: Verb1. reduce, melt off, lose weight, slim, slenderize, thin, slim down, change state, turnusage: take off weightWordNet 3.0 Copyright 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: maritime Analogy of the Day: Today?s Analogy Spelling Bee: Today?s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language