/ Thesaurus / S Synonyms of shelf life Find synonyms for: Noun1. shelf life, time period, period of time, periodusage: the length of time a packaged food or drug will last without deterioratingWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: languid Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language