split-second

split–second

adjective

Definition of SPLIT-SECOND

done or occurring without any noticeable lapse in time <a day trader who is used to making split-second decisions>

Synonyms immediate, instant, split-second, straightaway

Related Words summary; fast, hit-and-run, prompt, quick, rapid, speedy, swift

Near Antonyms dilatory, tardy; slow, sluggish; prolonged, protracted; deferred, delayed