The act of damaging the appearance or surface of something:
— The defacement of an Italian mosaic during the Turkish invasion.

synonyms: disfiguration, disfigurement, mutilation.

Roget 241: amorphism^†, informity^†; unlicked cub^†; rudis indigestaque moles [Lat.]; disorder etc. 59; deformity etc. 243.    disfigurement, defacement; mutilation; deforming.    chaos, randomness (disorder) 59.    [taking form from surroundings] fluid etc. 333.    ... show more

Dutch: beschadiging
Polish: szpecenie, oszpecanie