/ Thesaurus / S Synonyms of stock up Find synonyms for: Verb1. stock, buy in, stock up, supply, provide, render, furnishusage: amass so as to keep for future use or sale or for a particular occasion or use; "let's stock coffee as long as prices are low"WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: supine Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language