EON Antonyms There are 9 antonyms of the word eon. (opposite meanings)Did you mean?Definition of EONSynonyms of EONAlso try opposite words for..eonianBest Opposite Words For EONTop 20Top 10 Top 20 (Default)Top 50 Top 100 All All (Default)WordsPhrases All All (Default)Verb Noun Adjective Adverb RankWordSave?Synonyms..UsageType1agenounn2centurynounn3decadenounn4epochnounn5eranounn6millenniumnounn7momentnounn8periodnounn9yearnounn Alternatives for AGE Words (21)epochlifetimetimecycledurationeragenerationintervalperiodspanstageeldmatureyearsdotageeternitygeezerhoodlifespanmaturatesenesceyonksPhrases (3)old ageget onhistoric periodOpposite words for age Alternatives for CENTURY Words (1)hundredPhrases (1)one cAbbreviations (2)100cOpposite words for century Alternatives for DECADE Words (4)decennarydecenniumtentennerAbbreviations (2)10xOpposite words for decade Alternatives for EPOCH Words (9)eraagegenerationperiodphasespanspellstagetimePhrases (1)date of referenceOpposite words for epoch Alternatives for ERA Words (9)epochageperiodcycledategenerationspanstagetimePhrases (2)earned run averagegeological eraOpposite words for era Alternatives for MILLENNIUM Words (2)millenarykaOpposite words for millennium Alternatives for MOMENT Words (9)instantminutesecondtricestoundbitconsequenceimportmoPhrases (2)here and nowpresent momentOpposite words for moment Alternatives for PERIOD Words (6)pointdotstopcatameniaflowmenstruumPhrases (5)full stopfull pointgeological periodperiod of timetime periodOpposite words for period