NARROWBAND Antonyms There are 2 antonyms of the word narrowband. (opposite meanings)Did you mean?Definition of NARROWBANDSynonyms of NARROWBANDAlso try opposite words for..narrowbandsBest Opposite Words For NARROWBANDTop 20Top 10 Top 20 (Default)Top 50 Top 100 All All (Default)WordsPhrases All All (Default)Verb Noun Adjective Adverb RankWordSave?Synonyms..UsageType1broadbandnoun, adjectiven, adj2widebandadjectiveadj Alternatives for BROADBAND Words (12)widebandacceleratedexpeditiousfastfast-pacedhigh-speednimblequickrapidspeedyswiftzippyOpposite words for broadband Alternatives for WIDEBAND Words (8)broadbandexpeditiousfasthigh-speedquickrapidspeedyswiftOpposite words for wideband