Synonyms of instantaneous in English:

instantaneous

adjective

  • 1 it doesn't have the instantaneous delivery aspect of the Internet but you'll get much higher resolution
    informal snappy, pretty damn quick, PDQ
    literary fleet
    [Antonyms] delayed
  • Definition of instantaneous in:

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    Word of the day rebuff
    Pronunciation: rɪˈbʌf
    verb
    reject (someone or something) in an abrupt manner…