女～
じょ～ · jo～ · JLPT N2 · noun
things done by women
Jo sounds like a woman's name; 女 is an old character for a kneeling woman
女 is an ancient character showing a woman kneeling with her arms folded. Say jo like the name Jo, a classic woman's name, so this prefix marks things done by women.
女 — pictograph of a kneeling woman
女 is a pictograph originating in oracle bone script, depicting a person kneeling with arms crossed in front, a posture associated with women in ancient China. Over time the form was simplified and squared off into the modern character. Its core meaning of 'woman' or 'female' has remained stable for over three thousand years.