[v] corrupt, debase, or make impure by adding a foreign or inferior substance; often by replacing valuable ingredients with inferior ones; "adulterate liquor"
[v] lower in value by increasing the base-metal content; of metals
[v] 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"
adulterate, alloy, corrupt, debauch, demoralise, demoralize, deprave, dilute, misdirect, pervert, profane, stretch, subvert, vitiate