DO UP Antonyms There are 3 antonyms of the phrase do up. (opposite meanings)Did you mean?Definition of DO UPBest Opposite Words For DO UPTop 20Top 10 Top 20 (Default)Top 50 Top 100 All All (Default)WordsPhrases All All (Default)Verb Noun Adjective Adverb RankWordSave?Synonyms..UsageType1loosenverbv2unfastenverbv3untieverbv Alternatives for LOOSEN Words (13)relaxundoreleaseunfastenuntieslackenunbindunlooseunlatcheaseliberatelooseteasePhrases (4)let output outset freetease apartOpposite words for loosen Alternatives for UNFASTEN Words (13)undoloosenreleaseunbuckleunbuttonunclipuncorkunhookunlockunsealunstrapuntieunlatchOpposite words for unfasten Alternatives for UNTIE Words (18)loosenundounlacedetachreleaseunbindunbuckleunbuttonunclaspunfastenunhookunlashunsealunstrapunwrapunyokeunlatchunbraceOpposite words for untie