undercutEnglishOxford American Thesaurusundercut verb 1 English cloth manufacturers were able to undercut their continental rivals: charge less than, charge a lower price than, undersell, underbid. 2 the company denied that his authority was being undercut: undermine, weaken, impair, damage, sap, threaten, subvert, sabotage, ruin, disrupt, undo, destabilize, demolish, wreck, destroy, chip away.