Compounds of 無駄骨

• 無駄骨
  (n) useless
  waste of time and effort
  pointless
  vain efforts
• 無駄骨折り
  (n,vs) laboring in vain or for no result
  labouring in vain
• 無駄骨を折る
  (exp,v5r) (obsc) (id) to waste one's efforts
  to work to no (useful) effect