Debauch the young people with wine and women. Socrates was accused of corrupting young men. Do school counselors subvert young children?. Corrupt the morals.
source: WordNet 3.0
lower in value by increasing the base-metal content
source: WordNet 3.0
corrupt, debase, or make impure by adding a foreign or inferior substance; often by replacing valuable ingredients with inferior ones
Adulterate liquor.
source: WordNet 3.0
To reduce from a higher to a lower state or grade of worth, dignity, purity, station, etc.; to degrade; to lower; to deteriorate; to abase; as, to debase the character by crime; to debase the mind by frivolity; to debase style by vulgar words.