deface
verb (used with object)
to mar the surface or appearance of; disfigure.
Used to describe an ongoing action or continuous state that was happening at a specific time in the past.
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
Broken bottles and scraps of paper were defacing the hill turf, and when she turned to get to the water's edge she found the rushy coverts trampled on every side.
From The Half-Hearted by John Buchan