From Longman Dictionary of Contemporary Englishinstantlyin‧stant‧ly /ˈɪnstəntli/ ●●○ adverb IMMEDIATELYimmediately All four victims died instantly. The information was instantly available.► see thesaurus at immediately
Examples from the Corpus
instantly• It was a head-on crash and both drivers died instantly.• Sea snakes inject a poison so strong that it kills a fish instantly.• They recognized him instantly.• He knew instantly something was wrong. 