致ち死し性せいMeaningsNo-adjectiveNoun1. lethalKanji used致politely do死death性nature (of a person)Composed of致ち死しlethal; fatalNo-adjective性せいnature (of a person); sex; gender; sex (i.e. sexual attraction, activity, etc.); -ty; -ity; -ness; -cyNoun