POSTPAID Antonyms There are 3 antonyms of the word postpaid. (opposite meanings)Did you mean?Definition of POSTPAIDBest Opposite Words For POSTPAIDTop 20Top 10 Top 20 (Default)Top 50 Top 100 All All (Default)WordsPhrases All All (Default)Verb Noun Adjective Adverb RankWordSave?Synonyms..UsageType1cashverb, nounv, n2prepaidadjectiveadj3upfrontadverb, adjectiveadv, adj Alternatives for CASH Words (6)assetscapitalcurrencyfinancesfundsmoneyPhrases (6)cash inhard cashhard currencyimmediate paymentjohn cashjohnny cashOpposite words for cash