chuck up the sponge chuc·kupt·hes·ponge uncommon verb 1. give up in the face of defeat of lacking hope; admit defeat “In the second round, the challenger gave up” Synonymsdrop outgive upfall by the waysidedrop by the waysidethrow inthrow in the towelquitchuck up the sponge Antonymsenter Related words Word family quitter WordNet 2.1 (Princeton University). WordNet 2.1 Copyright Princeton University. All rights reserved.