Thesaurus

instantaneous

adjective

Synonyms and Antonyms of instantaneous

  1. done or occurring without any noticeable lapse in time the thunder following the flash of lightning was nearly instantaneous Synonyms of instantaneous immediate, instant, split-second, straightaway Words Related to instantaneous summary; fast, hit-and-run, prompt, quick, rapid, speedy, swift Near Antonyms of instantaneous dilatory, tardy; slow, sluggish; prolonged, protracted; deferred, delayed



Seen and Heard

What made you want to look up instantaneous? Please tell us where you read or heard it (including the quote, if possible).

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!