MILLENNIUMISM Antonyms There are 3 antonyms of the word millenniumism. (opposite meanings)Did you mean?Definition of MILLENNIUMISMBest Opposite Words For MILLENNIUMISMTop 20Top 10 Top 20 (Default)Top 50 Top 100 All All (Default)WordsPhrases All All (Default)Verb Noun Adjective Adverb RankWordSave?Synonyms..UsageType1ancientadjectiveadj2obsoleteadjectiveadj3outdatedadjectiveadj Alternatives for ANCIENT Words (20)agedantiquehoaryancientantiquatedarchaicbygoneobsoleteoldoldenoutdatedoutmodedprehistoricprimitivevenerableantediluvianforerunnergeriatricoldsterantecessorPhrases (1)senior citizenOpposite words for ancient Alternatives for OBSOLETE Words (9)disusedabortiveantiquatedobscuredeprecatedrudimentalantiquateoutdatedsuperannuatedPhrases (1)out-of-dateOpposite words for obsolete Alternatives for OUTDATED Words (1)supersededOpposite words for outdated