機能不全 きのうふぜん Meanings Noun, の-adjective dysfunction; malfunction; insufficiency Kanji 機 machine. Read as キ. 能 ability. Read as ノウ. 不 un- 全 all. Read as ゼン. Common phrases 機能不全に陥る Words containing 機能不全 性機能不全 (せいきのうふぜん) sexual dysfunction Jinuma: Japanese Dictionary · Word lists