無為無能 むいむのう Meanings Noun, な-adjective idle and incompetent; accomplishing nothing significant nor being capable of doing so; lacking the talent to do anything but idle away one's time Kanji 無 without. Read as ム. 為 sake 能 ability. Read as ノウ. Word lists Yojijukugo (四字熟語) Jinuma: Japanese Dictionary · Word lists