vulgarize

verb (used with object), vul·gar·ized, vul·gar·iz·ing.

1. to make vulgar or coarse; lower; debase: to vulgarize standards of behavior.
2. to make (a technical or abstruse work) easier to understand and more widely known; popularize.
3. to translate (a work) from a classical language into the vernacular.

verb (tr)

1. to make commonplace or vulgar; debase
2. to make (something little known or difficult to understand) widely known or popular among the public; popularize