ATOMIC Antonyms There are 2 antonyms of the word atomic. (opposite meanings)Did you mean?Definition of ATOMICSynonyms of ATOMICAlso try opposite words for..atomatomizedatomizationBest Opposite Words For ATOMICTop 20Top 10 Top 20 (Default)Top 50 Top 100 All All (Default)WordsPhrases All All (Default)Verb Noun Adjective Adverb RankWordSave?Synonyms..UsageType1molecularadjectiveadj2subatomicadjectiveadj