Synonyms for the word "deface" are numerous and can be used interchangeably depending on the context of use. Some of the commonly used synonyms include disfigure, spoil, mar, blot, tarnish, blemish, damage, wreck, defile, impair, and scar. These words all convey the idea of causing harm or damage to the appearance of something. Defacing can refer to physical alteration or the spoiling of something's integrity, such as a mural, an antique, or even a person's reputation. These synonyms provide a range of options that can be used to indicate the degree and type of damage caused, be it intentional or accidental.