急きゅう展てん開かいMeaningsNounSuru verb1. rapid development; rapid unfoldingKanji used急hurry展exhibit開openComposed of急きゅうsudden; abrupt; unexpected; urgent; pressing; steep; sharp; precipitous; rapid; swift; …Na-adjective展てん開かいdevelopment; evolution; progression; unfolding; (plot) twist; expansion; spreading out; extending; deployment; building up; …Noun