alter, change, modify - cause to change; make different; cause a transformation; "The advent of the automobile may have altered the growth pattern of the city"; "The discussion has changed my thinking about the issue"

carnalise, sensualise, sensualize, carnalize - debase through carnal gratification

infect - contaminate with ideas or an ideology; "society was infected by racism"

lead astray, lead off - teach immoral behavior to; "It was common practice to lead off the young ones, and teach them bad habits"

whore - corrupt by lewd intercourse

poison - spoil as if by poison; "poison someone's mind"; "poison the atmosphere in the office"

bastardise, bastardize - change something so that its value declines; for example, art forms

suborn - incite to commit a crime or an evil deed; "He suborned his butler to cover up the murder of his wife"

metallurgy - the science and technology of metals

devalue - lower the value or quality of; "The tear devalues the painting"

stretch, extend - increase in quantity or bulk by adding a cheaper substance; "stretch the soup by adding some more cream"; "extend the casserole with a little rice"

corrupt, spoil - alter from the original

water down - thin by adding water to; "They watered down the moonshine"

doctor, doctor up, sophisticate - alter and make impure, as with the intention to deceive; "Sophisticate rose water with geraniol"