Verb

• S: (v) corrupt, pervert, subvert, demoralize, demoralise, debauch, debase, profane, vitiate, deprave, misdirect (corrupt morally or by intemperance or sensuality) "debauch the young people with wine and women"; "Socrates was accused of corrupting young men"; "Do school counselors subvert young children?"; "corrupt the morals"
• S: (v) debase, alloy (lower in value by increasing the base-metal content)
• S: (v) load, adulterate, stretch, dilute, debase (corrupt, debase, or make impure by adding a foreign or inferior substance; often by replacing valuable ingredients with inferior ones) "adulterate liquor"

Adjective

• S: (adj) adulterate, adulterated, debased (mixed with impurities)
• S: (adj) debased, devalued, degraded (lowered in value) "the dollar is low"; "a debased currency"
• S: (adj) corrupted, debased, vitiated (ruined in character or quality)