不ふ妊にん性せいMeaningsNoun1. infertility (esp. of animals)Kanji used不negative妊get pregnant性nature (of a person)Composed of不ふ妊にんinfertility; sterility; barrennessNoun性せいnature (of a person); sex; gender; sex (i.e. sexual attraction, activity, etc.); -ty; -ity; -ness; -cyNoun