後こう進しん性せいMeaningsNoun1. backwardness; underdevelopmentKanji used後after進advance性nature (of a person)Pitch accentこうしんせいComposed of後こう進しんone's junior; younger generation; next generation; moving backwards; backing up; reversingNoun性せいnature (of a person); sex; gender; sex (i.e. sexual attraction, activity, etc.); -ty; -ity; -ness; -cyNoun