Compounds of 減らす

• 減らす
  (v5s,vt) to abate
  to decrease
  to diminish
  to shorten
  (P)
• すり減らす
  (v5s,vt) to wear away
  to rub down
  to abrade
• 擦り減らす
  (v5s,vt) to wear away
  to rub down
  to abrade
• 磨り減らす
  (v5s,vt) to wear away
  to rub down
  to abrade