defacement
noun
°An act of defacing; an instance of visibly marring or disfiguring something.
"Some consider the defacement of the Sphinx to be the most egregious crime of Napolean's campaigns."
°An act of voiding or devaluing; nullification of the face value.
"The soldiers found a variety of creative uses for their payment scrip after its defacement to scrap paper; some used it as toilet paper."
synonyms: disfiguration, graffiti, obliteration, vandalism more» , cancellation, devaluation