noun, adjectival noun or quasi-adjective, takes genitive case の

  1. incompetence, inefficiency, inability, incapacity.

noun

  1. incompetent person.

Variations

Pronunciation Kanji Kana Is Common
無能 むのう

Contained Kanji Breakdown

nothingness, none, ain't
ム ブ な.い (4th)
person(人) variant
40, forty
シュウ よんじゅう しじゅう
one, one radical (no.1)
イチ いっ ひと- (1st, N5)
fire, fire radical (no. 86)
ヒョウ カ
ability, talent, skill
ノウ よし の (5th, N3)
a small worm, larvae of mosquitoes, empty
I, myself, katakana mu radical (no. 28)
シ ボウ ム (Kentei 1)
month, moon
つき ゲツ ガツ (1st, N5)
spoon, spoon or katakana hi radical (no. 21)
ヒ さじ (Kentei 1)