有ゆう害がい性せいMeaningsNoun1. harmfulness; toxicityKanji used有be in possession害harm性nature (of a person)Composed of有ゆう害がいharmful; hazardousNa-adjective性せいnature (of a person); sex; gender; sex (i.e. sexual attraction, activity, etc.); -ty; -ity; -ness; -cyNoun