55TH Antonyms There are 2 antonyms of the abbr 55th. (opposite meanings)Did you mean?Definition of 55THSynonyms of 55THBest Opposite Words For 55THTop 20Top 10 Top 20 (Default)Top 50 Top 100 All All (Default)WordsPhrases All All (Default)Verb Noun Adjective Adverb RankWordSave?Synonyms..UsageType150thnoun, adjectiven, adj260thadjectiveadj