Definitions of vulgarize:

• verb:   act in a vulgar manner

  Example: "The drunkard tends to vulgarize"

• verb:   debase and make vulgar

  Example: "The Press has vulgarized Love and Marriage"

• verb:   cater to popular taste to make popular and present to the general public; bring into general or common use

  Example: "Relativity Theory was vulgarized by these authors"