debase

/dษชหˆbeษชs/
verb
  1. 1

    To lower in character, quality, or value; to degrade.

  2. 2

    To lower in position or rank.

  3. 3

    To lower the value of (a currency) by reducing the amount of valuable metal in the coins.

Source: https://en.wiktionary.org/wiki/debase