corrode

Etymology

From Middle English corrōden, that borrowed from Old French corroder or directly from Latin corrōdere (“to gnaw”), from con- (“completely”) + rōdere (“to gnaw”).

verb

1. (transitive) 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. (transitive) To consume; to wear away; to prey upon; to impair.
   My morale is being corroded day by day.
3. (intransitive) To have corrosive action; to be subject to corrosion.