Compounds of 無益

• 無益
  (adj-na,n,adj-no) useless
  futile
  vain
  (P)
• 無益有害
  (n,adj-na) useless and harmful
• 問答無益
  (n) there being no use in arguing (about it)
  being stone-deaf to someone's appeals
• 有害無益
  (n) more harm than good
  harmful and of no use