脆ぜい弱じゃく性せいMeaningsNoun1. vulnerability; weakness; fragility2. vulnerability; security holeKanji used脆fragile弱weak性nature (of a person)Composed of脆ぜい弱じゃくweak; frail; fragileNa-adjective性せいnature (of a person); sex; gender; sex (i.e. sexual attraction, activity, etc.); -ty; -ity; -ness; -cyNoun