MILLIWATT Antonyms There are 5 antonyms of the word milliwatt. (opposite meanings)Did you mean?Definition of MILLIWATTBest Opposite Words For MILLIWATTTop 20Top 10 Top 20 (Default)Top 50 Top 100 All All (Default)WordsPhrases All All (Default)Verb Noun Adjective Adverb RankWordSave?Synonyms..UsageType1kilowattnounn2megawattnounn3wattnounn4gigawattnounn5terawattnounn