不ふ死し性せいMeaningsNoun1. immortalityKanji used不negative死death性nature (of a person)Composed of不ふ死しimmortality; eternal life; undeath; undeadNoun性せいnature (of a person); sex; gender; sex (i.e. sexual attraction, activity, etc.); -ty; -ity; -ness; -cyNoun