instantaneous

adjective
UK: /ˌɪnstənˈteɪniəs/
US: /ˌɪnstənˈteɪniəs/

  1. Happening immediately, without any delay.

    1. The effect was instantaneous.
    2. The drug provides instantaneous relief from the pain, but the effect is temporary.

  2. Occurring or operating in a very brief space of time.

    1. Her reaction was instantaneous.
    2. Modern communication allows for almost instantaneous transfer of information across the globe.

Synonyms

instant swift prompt rapid immediate

Frequently Asked Questions

The word "instantaneous" in English means: Happening immediately, without any delay., Occurring or operating in a very brief space of time..

The phonetic transcription of "instantaneous" is /ˌɪnstənˈteɪniəs/ in British English and /ˌɪnstənˈteɪniəs/ in American English. Click the 🔊 button to hear both pronunciations.

Synonyms for "instantaneous": instant, swift, prompt, rapid, immediate.

Example usage of "instantaneous": "The effect was instantaneous.". More examples on the page.