debase

Verb
  1. Corrupt morally or by intemperance or sensuality (synset 202585532)
    "debauch the young people with wine and women"; "Socrates was accused of corrupting young men"; "Do school counselors subvert young children?"; "corrupt the morals"
  2. Lower in value by increasing the base-metal content (synset 200494453)
  3. Corrupt, debase, or make impure by adding a foreign or inferior substance;
    Often by replacing valuable ingredients with inferior ones (synset 200488684)
    "adulterate liquor"

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