defaced — having had the surface, legibility, or appearance spoiled or marred
disfigured — Simple past tense and past participle of disfigure.
marred — to damage or spoil to a certain extent; render less perfect, attractive, useful, etc.; impair or spoil: That billboard mars the view. The holiday was marred by bad weather.
simplified — to make less complex or complicated; make plainer or easier: to simplify a problem.
spoiled — to damage severely or harm (something), especially with reference to its excellence, value, usefulness, etc.: The water stain spoiled the painting. Drought spoiled the corn crop.
