wildness n. + Add to list US //ˈwaɪɫdnəs// UK //wˈaɪldnəs// wild·ness SynonymsAntonymsEtymology Synonyms abandonferocityfiercenessfuriousnessfuryvehemenceviolence Antonyms tamenessOriginMEwildenes→ENwildness From Middle English wildenes, wildenesse, equivalent to wild + -ness.