55 Antonyms There are 5 antonyms of the abbr 55. (opposite meanings)Did you mean?Definition of 55Best Opposite Words For 55Top 20Top 10 Top 20 (Default)Top 50 Top 100 All All (Default)WordsPhrases All All (Default)Verb Noun Adjective Adverb RankWordSave?Synonyms..UsageType10nounn211nounn322nounn433nounn544