急きゅう性せい期きMeaningsNoun1. acute phaseKanji used急hurry性nature (of a person)期period (of time)Composed of急きゅう性せいacute (illness)No-adjective期きperiod; time; opportunity; chance; occasion; age; term (e.g. in office); session (e.g. of parliament); stage (e.g. of a disease); season (e.g. of a TV series)Noun