/ Thesaurus / B Synonyms of back pack Find synonyms for: Noun1. backpack, back pack, knapsack, packsack, rucksack, haversack, bagusage: a bag carried by a strap on your back or shoulderVerb1. backpack, pack, hikeusage: hike with a backpack; "Every summer they are backpacking in the Rockies"WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: fabricate Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language