ignobleEnglishOxford American Thesaurusignoble adjective the war is being fought over an ignoble cause: dishonorable, unworthy, base, shameful, contemptible, despicable, shabby, abject, low, sordid, degraded, corrupt, mean, wrong; improper, unprincipled, unchivalrous, uncharitable, discreditable, blameworthy, reprehensible. ▷antonyms noble.