corrode

verb3

1. •
   To eat away bit by bit; to wear away or diminish by gradually separating or destroying small particles of, as by action of a strong acid or a caustic alkali.
2. •
   To consume; to wear away; to prey upon; to impair.

   • My morale is being corroded day by day.
3. •
   To have corrosive action; to be subject to corrosion.