deface

IPA: dɪfˈeɪs

To damage or vandalize something, especially a surface, in a visible or conspicuous manner.
To void or devalue; to nullify or degrade the face value of.
(heraldry, flags) To alter a coat of arms or a flag by adding an element to it.

Examples of "deface" in Sentences

The vandal used spray paint to deface the old building with graffiti
It is against the law to deface public property by scratching your initials into it
The artist was devastated to discover that someone had tried to deface her mural with permanent marker
The protesters gathered in front of the government building, determined to deface the statues of corrupt politicians
The school janitor had to clean up the restroom after someone attempted to deface the mirror with lipstick