Compounds of 無能

• 無能
  (adj-na,n,adj-no) inefficiency
  incompetence
  (P)
• 無能者
  (n) incompetent (person)
• 無能力
  (adj-na,n) incompetence
  inability
  disability
• 無為無能
  (n,adj-na) idle and incompetent
  accomplishing nothing significant nor being capable of doing so
  lacking the talent to do anything but idle away one's time
• 無芸無能
  (n,adj-na) talentless and imcompetent
  incompetent and unaccomplished
• 無能無策
  (n) ineptitude and inaction
  being incapable of devising any appropriate measures to cope with the situation
• 無能力者
  (n) (legally) incompetent