debase v. + Add to list US //dəˈbeɪs// UK //dɪbˈeɪs// de·base Archaic SynonymsEtymology Synonyms corruptdebauchdemoralizedepravemisdirectpervertprofanesubvertvitiateOriginLATbassus→OFRbas→ENdebase From de- + base, from Old French bas, from Latin bassus. Cognate with Spanish debajo (“under, beneath, below”). Compare abase.