AnalyzerSentence analysis2SpansSentence急低下1000 character limitAnalyzeSentence急きゅう低てい下かSpan Details急きゅうsudden; abrupt; unexpected; urgent; pressing; steep; sharp; precipitous; rapid; swift; fast; emergency; crisis; danger; urgency; haste; hurrying; end of a song (in gagaku or noh)na-adjective, noun低てい下かfall; decline; drop; deteriorationnoun, suru verb